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Replacement part details
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Detex CS-2940S Remote Alarm | Surface Mount, Gray, 100 dB
Detex CS-2940S Remote Alarm | Surface Mount, Gray, 100 dB
$358.00
$220.53
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Detex CS-2940S Surface-Mount Remote Alarm — Gray | 100 dB | AC Powered with 9V Battery Backup
Add a prominent secondary audible warning to a compatible commercial door security system with the Detex CS-2940S Gray Surface-Mounted Remote Alarm. Part of the Detex CS2900 Series, this externally powered remote alarm sounds a piercing 100 dB audible signal when activated by an open-contact door switch, an external alarm output or a compatible remote relay. A red LED illuminates when the alarm is sounding to improve local visibility. When the primary triggering alarm or open contact is cleared, the remote alarm automatically silences and resets, as specified by Detex.
Additional Product Specifications and Ordering Guidance
Remote Alarm Interface and Commissioning
Detex remote alarm devices provide an audible or visible response to an appropriate door-switch or main alarm input. They are accessories for a supervised exit or monitoring system, not substitutes for the alarm's initiating device or for the approved door hardware.
Factory item on this listing: DTX-CS-2940S-GRAY.
Product Selection and Installation Checklist
- Confirm the compatible primary alarm, control-panel output or door contact that will activate the remote unit.
- Select the correct wall mounting, housing finish and any required field box or power arrangement.
- Review the specific voltage, input type, wiring polarity, contact limits, battery backup and audible output documented by Detex.
- Determine how local and remote silencing/reset work together in the specified system.
Acceptance and Service Verification
Trigger the actual host door/alarm input, verify remote audio/LED response, and check reset, power-loss and return-to-normal behavior.
Factory Package and Related Components
One specified remote alarm assembly; initiating switch, primary alarm, cable and optional power accessories are separate unless included. Consult the original model specifications below when matching the factory SKU to an existing opening.
The CS-2940S has a gray surface-mounted enclosure, requires no operating cylinder (factory dummy cylinder supplied), and includes a 120VAC plug-in power adapter for normal operation, with 9VDC battery-backup capability for power interruptions. Confirm whether the replaceable 9V backup battery cell itself is furnished in the distributor package; a backup battery is not the same as an included rechargeable battery charger. This unit is a remote sounder, not a stand-alone magnetic door switch, complete exit lock, or delayed-egress controller.
Key Features and Benefits
- Genuine Detex CS2900 remote alarm: Model CS-2940S GRAY, surface-mount remote audible signaling device for commercial exits, stockrooms and security-monitored doors.
- 100 dB sound level: High-output local audible alarm provides immediate attention to a signal from an approved primary alarm, open-contact door switch or remote relay output.
- Automatic silence and reset: Detex specifies that securing or silencing the primary alarm automatically silences the remote sounder, avoiding unnecessary manual resetting at the remote unit.
- Externally powered: The CS2900 Series uses an included 120VAC plug-in power adapter/transformer. Use the manufacturer's approved power-input arrangement and qualified electrical installation practices.
- 9VDC battery backup: Designed to operate from a 9V battery backup during loss of normal external power; confirm the battery cell's inclusion and replacement schedule before fulfillment.
- Red alarm-indication LED: A red LED lights while the unit is sounding, helping staff locate the triggered remote alarm.
- No operating cylinder needed: A dummy cylinder is furnished; no key-controlled mortise or rim cylinder is required to operate this model.
- Up to 1,000 ft remote cable run: Detex states the remote alarm can be located up to 1,000 feet from the primary alarm using appropriate 18 AWG twisted-pair wire. Follow the factory wiring diagram and voltage/drop limits.
- 50 mA maximum current draw: Detex specifies a 50mA maximum load; this is a signaling device and does not provide power for the locking system.
- Surface-mounted gray housing: Factory surface mount design provides an accessible remote sounder without requiring the flush-mounted electrical box installation associated with the separate CS-2940F.
- Optional tamper-resistance: The Detex SSK4 tamper-proof kit is a separately ordered mechanical option to add tamper resistance.
- Remote monitoring extension: Useful in commercial facilities where the primary monitored exit is distant from occupied staff or security areas.
Technical Specifications
| Manufacturer | Detex Corporation |
|---|---|
| Manufacturer Model | CS-2940S GRAY |
| Series | CS2900 remote alarms, CS-2940S surface mount |
| Product Type | Externally powered, remote audible alarm / secondary sounder |
| Mounting | Surface mounted (S suffix); not a flush mount |
| Finish | Gray |
| Audible Alarm Output | 100 dB per Detex |
| Alarm Activation | Monitors an open contact or signal from a compatible door switch, remote relay output or primary alarm |
| Reset | Automatically silences when the originating alarm or open-contact condition is secured/cleared |
| Alarm Indicator | Red LED lights while the unit is sounding |
| Normal Power | 120VAC plug-in adapter / transformer included for the CS2900 external-power configuration |
| Operating / Backup Voltage | 9VDC backup provided by a suitable 9V battery; confirm cell supplied in carton |
| Maximum Current Draw | 50 mA per Detex |
| Remote Cable Distance | Up to 1,000 feet from primary alarm when correctly wired with 18-gauge twisted-pair cable |
| Operating Cylinder | Not required; dummy cylinder supplied |
| Housing Dimensions | About 4.65 in wide × 4.60 in high × 3.00 in deep — device dimensions, not shipping carton |
| Optional Security Kit | SSK4 tamper-proof kit — separately ordered |
| Fire Door / Delayed Egress | Remote alarm only; no standalone delayed-egress or fire-alarm-release function. Maintain applicable life-safety requirements for connected exits. |
| Shipping Weight | 3 lb provisional Shopify estimate. Actual packed weight for exact CS-2940S GRAY has not been independently verified |
| Shipping Carton Size | Not verified; do not substitute device dimensions for carton dimensions |
Typical Commercial Applications
- Remote audible indication of security-sensitive employee or stockroom doors
- Warehouse, distribution-center and retail exits needing a locally located alarm away from the primary monitored opening
- Additional alert location connected to a compatible Detex door-exit alarm or door-position switch
- Commercial buildings, hospitals and institutional facilities using low-voltage security monitoring
- Locations where an approved external relay can provide the necessary contact input to a secondary sounder
CS-Series Remote Alarm Selection
| Model | Mounting, Color and Power | Key Difference |
|---|---|---|
| CS-2940S GRAY — This Product | Surface mount, gray, AC adapter included, with 9VDC battery-backup capability | 100 dB externally powered remote alarm for a compatible open-contact monitoring arrangement |
| CS-2940F GRAY | Flush mount, gray, external AC adapter and 9V backup | Flush-mounted alternative; requires appropriate double switch/outlet box |
| CS-940S GRAY | Surface mount, gray, 9V battery-powered | Battery-only CS900 model, unlike externally powered CS2900 model |
| CS-2950S BLACK | Surface mount, black, external AC adapter and 9V backup | Black color alternative from the externally powered CS2900 family |
What's Included
One genuine Detex CS-2940S GRAY surface-mounted remote alarm assembly, its manufacturer-specified 120VAC plug-in adapter/transformer, a dummy cylinder (no operating cylinder required), and standard factory mounting components. The model provides 9VDC battery backup capability; verify whether a replaceable 9V cell is included in the actual factory box.
Sold Separately
External door-position switch, primary alarm or dry-contact relay module, security/alarm control panel, 18 AWG twisted-pair installation cable, optional Detex SSK4 tamper-proof hardware kit, door and frame, and installation labor. The CS-2940S itself does not include the connected door switch, electric exit device or mechanical locking hardware.
Shipping Information
Shopify shipping weight: 3 lb — provisional. This temporary setting is an estimate for the alarm body and external power adapter; the exact manufacturer/distributor shipping weight and carton dimensions were not verified. Actual device dimensions are approximately 4.65 × 4.60 × 3.00 in, but these are not carrier carton dimensions. Confirm the full packaged weight and box measurements before rating UPS shipments.
Installation and Electrical Notes
Connect the CS-2940S to the approved primary alarm, door contact or relay according to Detex's current CS900/2900 wiring instructions. Use the included 120VAC adapter for normal power and a compatible 9V battery for backup where required. The 50mA maximum draw and up to 1,000 ft cable distance with 18 AWG twisted-pair wire are manufacturer specifications; follow the correct open-contact input requirements, wire routing and code-mandated egress functions. This is a remote indicator alarm, not a locking or delayed-egress device.
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