{"product_id":"command-access-ps220-24vdc-linear-power-supply-2a-continuous-3a-boost","title":"Command Access PS220 Series 24VDC Power Supply | Backup Options","description":"\u003ch2\u003ePS220 Power Supplies — Detailed Buyer Guide\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCommand Access PS220\u003c\/strong\u003e family supplies regulated \u003cstrong\u003e24VDC\u003c\/strong\u003e power for compatible electrified commercial locking hardware with \u003cstrong\u003e2A continuous combined output\u003c\/strong\u003e and a \u003cstrong\u003e3A short-duration boost\u003c\/strong\u003e, subject to the published duty-cycle and operating conditions. Select the basic PS220 where no standby backup is needed or the PS220B where battery-backup capability is specified.\u003c\/p\u003e\u003ch3\u003eChoosing PS220 Versus PS220B\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003ePS220\u003c\/strong\u003e is the standard regulated 24VDC supply; the \u003cstrong\u003ePS220B\u003c\/strong\u003e adds a battery-backup-ready configuration. Both are designed around the model family's \u003cstrong\u003e2A continuous\u003c\/strong\u003e rating and separately specified \u003cstrong\u003e3A boost\u003c\/strong\u003e function. Compare the exact power-supply enclosure and charging features before choosing a variant.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteady-state versus actuation:\u003c\/strong\u003e Size the connected locking devices against the continuous rating, then separately evaluate short-duration retraction or solenoid current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackup:\u003c\/strong\u003e For PS220B, verify approved battery type, quantity, charging current, enclosure clearance and required standby duration. Batteries are not automatically included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl wiring:\u003c\/strong\u003e Review the latest terminal diagram, output protection, required fire-alarm interface, cable size and voltage-drop limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcceptance:\u003c\/strong\u003e Test output with all intended devices connected and verify any required loss-of-power, release and standby behavior.\u003c\/li\u003e\n\u003c\/ul\u003e\u003csection\u003e\u003ch3\u003e24VDC Power Sizing and Backup Configuration Guide\u003c\/h3\u003e\n\u003cp\u003eChoose a \u003cstrong\u003eCommand Access PS220\u003c\/strong\u003e supply when the project calls for a regulated 24VDC source for compatible access-controlled door hardware. The family is described with \u003cstrong\u003e2A continuous output and a 3A boost capability\u003c\/strong\u003e; the boost figure is not a replacement for the continuous-duty rating. Choose \u003cstrong\u003ePS220B\u003c\/strong\u003e when a battery-backup-ready assembly is required rather than the standard PS220 configuration.\u003c\/p\u003e\n\u003ch4\u003eSystem Design Checks\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous versus peak load:\u003c\/strong\u003e Calculate the steady current draw of connected devices separately from brief startup or latch-pullback inrush. Verify whether the specific connected hardware and boost duration meet the supply manufacturer’s allowable limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring and output allocation:\u003c\/strong\u003e Confirm the number and rating of available output circuits, terminal arrangement, protective devices, wire gauge, voltage drop and the final electrical diagram for the selected variant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-backup version:\u003c\/strong\u003e For PS220B, establish the required standby period, battery type and capacity, charging arrangement, installation location and inspection procedure. Do not assume batteries or extended runtime are included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency release and controls:\u003c\/strong\u003e Check fire-alarm interface, door control sequencing, loss-of-power requirements and any electronic latch retraction loads with the hardware and life-safety specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Verify enclosure dimensions, input power, environmental conditions, service access and electrical separation requirements prior to installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAcceptance and Service Tests\u003c\/h4\u003e\n\u003cp\u003eVerify regulated 24VDC output at working load, branch protection and correct behavior during operation of every connected lock or retraction motor. Test required release interfaces and, where applicable, the PS220B’s battery charging and power-transfer behavior. Obtain the model-specific manufacturer wiring instructions before energizing the system.\u003c\/p\u003e\u003c\/section\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eOutput capacity\u003c\/th\u003e\n\u003cth\u003eControl architecture\u003c\/th\u003e\n\u003cth\u003eBackup configuration\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePS220\u003c\/td\u003e\n\u003ctd\u003e24VDC; 2A continuous, 3A boost\u003c\/td\u003e\n\u003ctd\u003eTwo separately controlled channels\u003c\/td\u003e\n\u003ctd\u003eStandard; no integrated backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePS220B\u003c\/td\u003e\n\u003ctd\u003e24VDC; 2A continuous, 3A boost\u003c\/td\u003e\n\u003ctd\u003eTwo separately controlled channels\u003c\/td\u003e\n\u003ctd\u003eBattery backup \/ charging support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eSpecifications and Selection Guidance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower input:\u003c\/strong\u003e Nominal 110–120VAC, 60Hz; verify AC input protection, grounding and enclosure requirements in the current factory cut sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost rating:\u003c\/strong\u003e The 3A rating is short-duration and subject to duty-cycle restrictions; it is not a continuous 3A rating for multiple devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-channel operation:\u003c\/strong\u003e Separate input\/output control channels may support compatible electric lock, latch-retraction, electric strike or maglock applications within the shared power budget.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackup choice:\u003c\/strong\u003e PS220B adds standby battery charging and transfer provisions. Select manufacturer-approved batteries separately and size runtime for the expected loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl integration:\u003c\/strong\u003e Verify all interfaces, input trigger wiring, protective outputs, fire-alarm integration, door-release behavior and device current draw before wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStartup requirements:\u003c\/strong\u003e Electrified devices may require more current during initial actuation; check both steady-state and inrush loading before choosing the supply.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe power supply does not include the connected electrified locks, panic devices, controller or field wiring. Follow applicable electrical and life-safety requirements during installation.\u003c\/p\u003e\u003ch3\u003eBefore You Order\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMatch the exact factory model and variant to the project hardware schedule; model suffixes indicate important operational differences.\u003c\/li\u003e\n\u003cli\u003eConfirm electrical supply, wiring, control interface, local codes and compatibility with the installed equipment.\u003c\/li\u003e\n\u003cli\u003eUse current manufacturer wiring diagrams, cut sheets and installation instructions; test the complete door assembly after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cp\u003eCommand Access PS220 power supply family, 24VDC 2A continuous with 3A boost, offered with or without the battery-backup configuration. Consult each model's included features and battery requirements.\u003c\/p\u003e\u003ch3\u003eAvailable models\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePS220 — Standard\u003c\/strong\u003e — PS220\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePS220B — Battery Backup\u003c\/strong\u003e — PS220B\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eModel-specific technical details and installation requirements\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003ePS220 — Standard — PS220\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe \u003cstrong\u003eCommand Access Technologies PS220\u003c\/strong\u003e is a commercial-grade, regulated \u003cstrong\u003e24VDC linear power supply\u003c\/strong\u003e for compatible electrified door hardware. Providing \u003cstrong\u003e2A continuous combined output\u003c\/strong\u003e and a \u003cstrong\u003e3A short-duration boost at 20% duty cycle\u003c\/strong\u003e, it is designed to power electric locks, latch-retraction exit devices, electric strikes, electric trim and magnetic locks within the manufacturer's load limits. Two separately triggered solid-state input\/output channels offer flexible control for up to two compatible locking circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant model distinction:\u003c\/strong\u003e This listing is for \u003cstrong\u003ePS220 without battery backup\u003c\/strong\u003e. For an integrated standby battery-charging and backup version, select the separately sold PS220B. The PS220 has a compact \u003cstrong\u003e11\" W x 11\" H x 4\" D\u003c\/strong\u003e metal enclosure.\u003c\/p\u003e\n\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulated 24VDC output:\u003c\/strong\u003e Provides 2A continuous total rated output for compatible commercial access-control equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3A short-duration boost:\u003c\/strong\u003e 20% duty-cycle boost for compatible motorized or solenoid latch-retraction startup demands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo independently controlled circuits:\u003c\/strong\u003e Two solid-state inputs triggered by normally-open dry contacts and two associated protected outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-resetting output protection:\u003c\/strong\u003e Each solid-state output is individually rated up to 1.5A; \u003cstrong\u003ecombined continuous current must not exceed 2A\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5A constant-power tap:\u003c\/strong\u003e Separate protected 24VDC accessory power connection; include accessory consumption in the total output budget.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-alarm link:\u003c\/strong\u003e Interface connection for integration with the approved fire-alarm and life-safety design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic indication:\u003c\/strong\u003e AC power and DC output LED indicators simplify troubleshooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation-ready enclosure:\u003c\/strong\u003e Compact metal cabinet with removable hingeless cover, removable Euro-style terminals and 1\/2\" and 3\/4\" conduit knockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput protection and adjustment:\u003c\/strong\u003e Over-voltage protection, auto-resetting output circuitry and output-voltage adjustment per manufacturer instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial electrical listing:\u003c\/strong\u003e Manufacturer literature identifies UL 294 Sixth Edition and Class 2 power-limited output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eCommand Access Technologies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel \/ Manufacturer SKU\u003c\/th\u003e\n\u003ctd\u003ePS220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEasy Order Number\u003c\/th\u003e\n\u003ctd\u003e78851\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eRegulated linear power supply, without battery backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAC Input\u003c\/th\u003e\n\u003ctd\u003e110-120VAC nominal, 60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Fuse\u003c\/th\u003e\n\u003ctd\u003e2A, 250VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDC Output\u003c\/th\u003e\n\u003ctd\u003eRegulated 24VDC (+\/- 10% per manufacturer literature)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContinuous Output\u003c\/th\u003e\n\u003ctd\u003e2A maximum combined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShort-Term Boost\u003c\/th\u003e\n\u003ctd\u003e3A at 20% duty cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl Inputs\u003c\/th\u003e\n\u003ctd\u003e2 normally-open dry-contact-triggered solid-state inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProtected Outputs\u003c\/th\u003e\n\u003ctd\u003e2 auto-resetting solid-state outputs, up to 1.5A individually; 2A combined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e24VDC Auxiliary Tap\u003c\/th\u003e\n\u003ctd\u003e0.5A protected; subject to system total load rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFire Alarm Integration\u003c\/th\u003e\n\u003ctd\u003eFire-alarm link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBackup Battery Feature\u003c\/th\u003e\n\u003ctd\u003eNot included on the PS220; PS220B is the separate battery-backup model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Size\u003c\/th\u003e\n\u003ctd\u003e11\" wide x 11\" high x 4\" deep\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e32-120°F (0-49°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Relative Humidity\u003c\/th\u003e\n\u003ctd\u003e85%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit Weight\u003c\/th\u003e\n\u003ctd\u003e10 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e11 lb; confirm actual packaged carrier weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCommercial electric-lock and electric-strike systems\u003c\/li\u003e\n\u003cli\u003eCompatible 24VDC motorized or solenoid latch-retraction exit devices\u003c\/li\u003e\n\u003cli\u003eElectrified exit trims, mortise or cylindrical locks and magnetic locks\u003c\/li\u003e\n\u003cli\u003eCommercial offices, education, healthcare, industrial and facility-management access-control openings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering and Installation Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e One PS220 regulated 24VDC power supply inside its metal enclosure with two protected control circuits and fire-alarm link. \u003cstrong\u003eNot included:\u003c\/strong\u003e Battery backup circuitry, standby batteries, electric locks, exit devices, access controllers, field wiring, conduit or installation labor. Select the \u003cstrong\u003ePS220B\u003c\/strong\u003e separately when battery backup is needed. Installation and fire-alarm integration must follow the latest Command Access instructions, applicable electrical codes, approved egress design and actual connected-device current requirements.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003ePS220B — Battery Backup — PS220B\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThe \u003cstrong\u003eCommand Access Technologies PS220B Regulated Linear Power Supply with Battery Backup\u003c\/strong\u003e is a professional \u003cstrong\u003e24VDC access-control power supply\u003c\/strong\u003e for compatible electrified commercial door hardware. Designed to support up to two compatible electric locks, motorized or solenoid-operated latch-retraction devices, electric exit trims, electric strikes or magnetic locks, the PS220B supplies \u003cstrong\u003e2 amperes continuous output\u003c\/strong\u003e with a \u003cstrong\u003e3-amp short-duration boost (20% duty cycle)\u003c\/strong\u003e. It provides \u003cstrong\u003etwo independently triggered solid-state input\/output channels\u003c\/strong\u003e, integrated battery charging, a fire-alarm link and a separate 24VDC constant-power tap.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBattery-backup model:\u003c\/strong\u003e The \u003cstrong\u003ePS220B\u003c\/strong\u003e is the battery-backup version of the PS220. It includes an automatic uninterrupted backup circuit, regulated independent battery charging and battery connection cables. The larger metal enclosure accepts \u003cstrong\u003etwo 12VDC, 7Ah batteries (not included)\u003c\/strong\u003e. This listing is for the complete \u003cstrong\u003ePS220B enclosed power supply\u003c\/strong\u003e, not the smaller non-backup PS220 or a bare replacement circuit board.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput sizing:\u003c\/strong\u003e The PS220B's \u003cstrong\u003e2A continuous rating is the combined rated output\u003c\/strong\u003e, not 2A independently available on each channel. Its two auto-resetting solid-state outputs are individually protected at \u003cstrong\u003e1.5A each\u003c\/strong\u003e, and the constant \u003cstrong\u003e24VDC power tap is protected at 0.5A\u003c\/strong\u003e. According to the product installation instructions, the \u003cstrong\u003etotal combined 24VDC output current must not exceed 2A\u003c\/strong\u003e. Check the connected hardware's startup current, steady draw, surge duty cycle, power-tap load, conductor sizing and wiring distance before designing an installation.\u003c\/p\u003e\n\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulated 24VDC linear power:\u003c\/strong\u003e Stable low-voltage DC output for compatible electric locks, exit devices, electric strikes, magnetic locks and access-control equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2A continuous total rating:\u003c\/strong\u003e Supports up to 2 amperes of combined continuous 24VDC output. Use an appropriately sized supply when connected devices exceed this rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3A boost at 20% duty cycle:\u003c\/strong\u003e Designed for short-duration inrush associated with compatible motor-driven and solenoid-operated electric latch-retraction hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo independently controlled input\/output channels:\u003c\/strong\u003e Two solid-state input triggers for normally-open dry contacts and two corresponding PTC-protected 24VDC outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo auto-resetting outputs:\u003c\/strong\u003e Each individually protected output is specified at up to 1.5A; total simultaneous output demand remains subject to the 2A overall limit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstant 24VDC power tap:\u003c\/strong\u003e A separately protected \u003cstrong\u003e0.5A power tap\u003c\/strong\u003e for compatible constant-power accessories, subject to the aggregate power budget.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated battery backup:\u003c\/strong\u003e Automatically transfers to standby battery power when installed with the specified batteries and correctly commissioned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulated independent battery charging:\u003c\/strong\u003e Maintains compatible backup batteries and provides an uninterrupted backup circuit when properly configured.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery cables included:\u003c\/strong\u003e Factory backup-circuit battery connection leads are supplied; two 12VDC 7Ah batteries are required and are sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-alarm link:\u003c\/strong\u003e Provides fire-alarm control-interface wiring described in the factory installation instructions; integrate with the approved life-safety design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed, green and orange LED diagnostics:\u003c\/strong\u003e Red AC-power indicator, green DC-output\/channel indicator and orange battery-output indicator for service troubleshooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEuro-style removable connectors:\u003c\/strong\u003e Designed for convenient low-voltage field wiring, service and replacement within manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage adjustment and protection:\u003c\/strong\u003e Output voltage trim, overvoltage protection and auto-resetting output protection, subject to the latest product instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL 294 Sixth Edition:\u003c\/strong\u003e Manufacturer documentation identifies the PS220B as UL 294 6th Edition listed with Class 2 power-limited output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge commercial metal enclosure:\u003c\/strong\u003e Measures \u003cstrong\u003e13\" wide x 15-1\/2\" high x 5\" deep\u003c\/strong\u003e and has 1\/2\" and 3\/4\" conduit knockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemovable hingeless cover:\u003c\/strong\u003e Metal enclosure cover is removable; a cam lock is not supplied.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eCommand Access Technologies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003ePS220B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShopify SKU\u003c\/th\u003e\n\u003ctd\u003ePS220B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEasy Order Number\u003c\/th\u003e\n\u003ctd\u003e78852\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Category\u003c\/th\u003e\n\u003ctd\u003eAccess control \/ electric door hardware power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply Design\u003c\/th\u003e\n\u003ctd\u003eRegulated linear DC power supply with battery backup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAC Input\u003c\/th\u003e\n\u003ctd\u003e110-120VAC nominal; 120VAC, 60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Fuse\u003c\/th\u003e\n\u003ctd\u003e2A \/ 250VAC, 5mm x 20mm; replace only as instructed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal DC Output\u003c\/th\u003e\n\u003ctd\u003e24VDC regulated, +\/- 10% according to installation literature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContinuous Output Rating\u003c\/th\u003e\n\u003ctd\u003e2A maximum combined output current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBoost Output\u003c\/th\u003e\n\u003ctd\u003e3A short-duration boost at 20% duty cycle; confirm approved loads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Triggers\u003c\/th\u003e\n\u003ctd\u003eTwo independent solid-state inputs triggered by normally-open dry contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControlled Outputs\u003c\/th\u003e\n\u003ctd\u003eTwo protected solid-state outputs, auto-resetting, individually rated up to 1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Output Current Limit\u003c\/th\u003e\n\u003ctd\u003eCombined output current must not exceed 2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e24VDC Constant Power Tap\u003c\/th\u003e\n\u003ctd\u003e0.5A resettable protected tap; include accessory draw in total output budget\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Backup\u003c\/th\u003e\n\u003ctd\u003eIntegrated automatic uninterrupted transfer and independent charging circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRequired Batteries\u003c\/th\u003e\n\u003ctd\u003eTwo 12VDC 7Ah batteries, not included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Connection Cables\u003c\/th\u003e\n\u003ctd\u003eIncluded per manufacturer specifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFire-Alarm Interface\u003c\/th\u003e\n\u003ctd\u003eFactory fire-alarm link; follow published wiring instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiagnostic LEDs\u003c\/th\u003e\n\u003ctd\u003eRed: AC power; green: DC output; orange: battery output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Voltage Trim\u003c\/th\u003e\n\u003ctd\u003eAdjustable, per manufacturer's instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Protection\u003c\/th\u003e\n\u003ctd\u003eTwo PTC-protected \/ auto-resetting outputs; overvoltage protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Listing\u003c\/th\u003e\n\u003ctd\u003eUL 294 Sixth Edition; Class 2 rated power-limited output according to factory literature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Material\u003c\/th\u003e\n\u003ctd\u003eMetal with removable hingeless cover, cam lock not included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnclosure Dimensions\u003c\/th\u003e\n\u003ctd\u003e13\" W x 15-1\/2\" H x 5\" D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConduit Knockouts\u003c\/th\u003e\n\u003ctd\u003e1\/2\" and 3\/4\" sizes, located on enclosure sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e32-120 degrees F (0-49 degrees C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Relative Humidity\u003c\/th\u003e\n\u003ctd\u003e85%, per manufacturer specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Weight\u003c\/th\u003e\n\u003ctd\u003e14 lb (supplier specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e15 lb (supplier shipment weight; verify actual packed carrier weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eCommon Commercial Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePower supplies for two independently triggered compatible commercial electric-locking circuits\u003c\/li\u003e\n\u003cli\u003eMotorized latch-retraction panic exit devices and low-current solenoid exit trim\u003c\/li\u003e\n\u003cli\u003eCompatible electrified mortise and cylindrical locksets\u003c\/li\u003e\n\u003cli\u003eElectric strikes and magnetic locks with compatible 24VDC voltage and current specifications\u003c\/li\u003e\n\u003cli\u003eCommercial office, institutional, educational, healthcare and facility-management access-control installations\u003c\/li\u003e\n\u003cli\u003eProjects needing a protected fire-alarm link and automatic backup power during AC service interruptions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePS220B Versus PS220 and PS210\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePS220B\u003c\/strong\u003e has \u003cstrong\u003e2A continuous output, 3A short-duration boost, two independent input\/output channels, a 0.5A protected constant-power tap and integrated battery backup\u003c\/strong\u003e in the \u003cstrong\u003e13\" x 15-1\/2\" x 5\"\u003c\/strong\u003e large enclosure. The otherwise similar \u003cstrong\u003ePS220\u003c\/strong\u003e does not include the battery-backup circuitry and uses a smaller enclosure. The \u003cstrong\u003ePS210\u003c\/strong\u003e has \u003cstrong\u003e1.5A continuous output and one input\/output channel\u003c\/strong\u003e with no integrated battery-backup circuit. These models are not interchangeable without verifying electrical design and hardware requirements.\u003c\/p\u003e\n\u003ch3\u003eOrdering and Installation Checklist\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the correct product:\u003c\/strong\u003e Specify \u003cstrong\u003ePS220B\u003c\/strong\u003e with battery-backup circuitry, rather than PS220 without backup or PS210 with a single channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall standby batteries:\u003c\/strong\u003e Order \u003cstrong\u003etwo separate 12VDC 7Ah batteries\u003c\/strong\u003e; the power supply includes battery charging circuitry and connection cables, but \u003cstrong\u003edoes not include the batteries\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify branch circuit:\u003c\/strong\u003e A qualified installer should supply 120VAC\/60Hz mains power in compliant conduit with correct overcurrent protection, grounding and separation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalculate total system load:\u003c\/strong\u003e Do not exceed \u003cstrong\u003e2A combined continuous\u003c\/strong\u003e output or individual protected output limits; include power-tap draw and factor in the 3A 20% duty-cycle boost for compatible momentary loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan controls:\u003c\/strong\u003e Two normally-open dry-contact triggers control two channels; match the current wiring diagram for door control relays, access systems and egress devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImplement fire-alarm wiring:\u003c\/strong\u003e Follow the manufacturer's FIRE terminal wiring guide and local approved life-safety plan; the normal factory jumper must be handled correctly if connecting an external fire-alarm relay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize and route field wires:\u003c\/strong\u003e Consider lock inrush\/holding current, distance, voltage drop and wire gauge; do not put mains AC on low-voltage control terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount in a protected location:\u003c\/strong\u003e Ensure access to diagnostic indicators, service clearance and enclosure dimensions with appropriate knockout use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommission and test:\u003c\/strong\u003e Test channel activation, regulated DC output, fire-alarm behavior, loss-of-AC backup transfer, battery charging and restoration under expected load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eOne \u003cstrong\u003eCommand Access PS220B\u003c\/strong\u003e regulated \u003cstrong\u003e24VDC, 2A continuous \/ 3A boost\u003c\/strong\u003e linear power supply in a large metal enclosure with two solid-state input\/output channels, fire-alarm link and integrated battery-backup charger with battery connection cables. Verify mounting accessories and current package contents at purchase.\u003c\/p\u003e\n\u003ch3\u003eNot Included\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTwo required 12VDC 7Ah backup batteries are not included.\u003c\/strong\u003e Electric locks, panic exit devices, electric strikes, maglocks, access-control controllers, field wiring, conduit, enclosure cam lock and installation labor are sold separately. This listing is for the \u003cstrong\u003ePS220B enclosed power supply\u003c\/strong\u003e only.\u003c\/p\u003e\u003c\/details\u003e","brand":"Command Access Technologies","offers":[{"title":"PS220 — Standard","offer_id":68030658150615,"sku":"PS220","price":287.7,"currency_code":"USD","in_stock":true},{"title":"PS220B — Battery Backup","offer_id":68030723260631,"sku":"PS220B","price":337.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/4933\/1927\/files\/COM_PS220_220B_a284f16a-4bbe-42b6-a548-da3e1cf1cc8a.png?v=1794339594","url":"https:\/\/shop.commercialdoorworx.com\/products\/command-access-ps220-24vdc-linear-power-supply-2a-continuous-3a-boost","provider":"Commercial Door Worx","version":"1.0","type":"link"}