{"product_id":"bosch-ds939-360-panoramic-ceiling-mount-pir-intrusion-motion-detector-white","title":"Bosch DS939 360° Panoramic Ceiling-Mount PIR Intrusion Motion Detector – White","description":"\n\u003cp\u003e\u003cstrong\u003eBosch DS939 Panoramic Ceiling-Mount PIR Motion Detector\u003c\/strong\u003e is a commercial-grade, \u003cstrong\u003e360-degree passive infrared (PIR) intrusion detector\u003c\/strong\u003e designed to monitor large indoor areas from an overhead mounting position. Its panoramic detection pattern helps secure open floor plans, warehouses, retail spaces, offices, corridors, and other locations where conventional wall-mounted motion detectors may leave gaps or be obstructed by shelving, equipment, or interior partitions.\u003c\/p\u003e\n\u003cp\u003eThe DS939 uses \u003cstrong\u003ethree individually adjustable PIR optical sections\u003c\/strong\u003e to tailor its detection pattern to the room. It combines Bosch \u003cstrong\u003eFirst Step Processing (FSP)\u003c\/strong\u003e and dynamic temperature compensation to detect human movement promptly while reducing nuisance alarms. For UL\/ULC applications, Bosch specifies \u003cstrong\u003e360° coverage up to 46 ft (14 m) in diameter\u003c\/strong\u003e when mounted up to \u003cstrong\u003e20 ft (6.1 m)\u003c\/strong\u003e high. Actual coverage depends on ceiling height, optical adjustment, mounting conditions, and the applicable approval standard.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e360-degree panoramic coverage:\u003c\/strong\u003e Monitors floor areas surrounding the detector from a central ceiling location rather than a single wall-facing direction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 46-ft coverage diameter for UL\/ULC:\u003c\/strong\u003e Up to 23-ft radius with approved installation and mounting conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree adjustable PIR sections:\u003c\/strong\u003e Independent optical adjustments allow installers to focus coverage on specific zones or room geometry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst Step Processing (FSP):\u003c\/strong\u003e Intelligent PIR signal analysis supports fast detection of moving human targets while limiting unwanted alarms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic temperature compensation:\u003c\/strong\u003e Maintains effective detection as ambient temperature changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoverage masking kit included:\u003c\/strong\u003e Supplied masking pieces allow exclusion of selected sectors of the 360° pattern to reduce monitoring of unwanted areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED walk-test indication:\u003c\/strong\u003e High-efficiency LED and light-pipe design make the detector's activation indication easy to see from different viewing angles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote LED control and alarm memory:\u003c\/strong\u003e Supports remote LED testing and alarm-memory functions during commissioning and service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm C alarm relay:\u003c\/strong\u003e Provides a dry-contact alarm output for a compatible intrusion alarm control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCover\/base tamper protection:\u003c\/strong\u003e Normally closed tamper supervision helps identify unauthorized removal or opening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHinged chassis and mounting base:\u003c\/strong\u003e Facilitates wiring, configuration, and service access during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9–15 VDC operation:\u003c\/strong\u003e Low-voltage wired detector suited to compatible commercial intrusion alarm systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBosch Security Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDS939\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommercial Door Worx SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBOSCH-DS939\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCeiling-mounted PIR intrusion motion detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection Technology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePassive infrared (PIR); three adjustable optical sections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection Angle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e360° panoramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage (UL\/ULC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 46 ft (14 m) diameter \/ 23 ft (7 m) radius\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8–20 ft (2.4–6.1 m); subject to applicable approvals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection Pattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e69 detection zones in 21 barriers, arranged in three adjustable sections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Adjustment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndependent vertical adjustment of three PIR sections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Processing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFirst Step Processing (FSP); dynamic temperature compensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9–15 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 mA standby; 20 mA in alarm with LEDs enabled (manufacturer datasheet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilent Form C relay, less than 100 mA at 25 VDC, 2.5 W maximum, resistive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTamper Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNormally closed cover\/base tamper, 28 VDC, 125 mA, 3 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelectable low\/high gain setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTest Features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWalk-test LED, remote LED control, and alarm memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApproximately 7 in. diameter × 3.5 in. high (17.8 × 8.9 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect ceiling mounting or compatible standard rectangular electrical box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature for UL Installations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+32°F to +120°F (0°C to +49°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Masking Kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo 120° and two 90° masks to exclude selected coverage sectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eCommercial Applications\u003c\/h3\u003e\n\u003cp\u003eDesigned for \u003cstrong\u003eintrusion alarm monitoring\u003c\/strong\u003e in warehouses, commercial office interiors, retail sales floors, healthcare facilities, storage areas, schools, and buildings with high ceilings or significant floor-level obstacles. Overhead PIR detection is useful where a central mounting position offers more complete monitoring than a wall-mounted detector. The DS939 requires a compatible wired intrusion alarm panel and low-voltage power source.\u003c\/p\u003e\n\u003ch3\u003eOrdering \u0026amp; Installation Notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eVerify that the Bosch DS939 is appropriate for your alarm system, ceiling height, coverage diameter, power supply, wiring requirements, and applicable approval standard before ordering.\u003c\/strong\u003e Mounting height and pattern adjustments affect actual coverage. Avoid placement near moving fans, rapid temperature changes, and other potential PIR interference sources. Confirm alarm and tamper relay ratings before connecting the detector to a control panel. Follow the manufacturer's installation manual and local security\/electrical codes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The DS939 is a \u003cstrong\u003eceiling-mounted intrusion motion detector, not a dedicated request-to-exit (REX) door release sensor\u003c\/strong\u003e. It does not include a complete alarm control panel, power supply, electric lock, or door release controller.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial Door Worx\u003c\/strong\u003e supplies Bosch security motion detectors, access-control equipment, electronic security components, and commercial door hardware for installers, facility maintenance teams, and commercial building owners.\u003c\/p\u003e","brand":"Bosch Security Systems","offers":[{"title":"White","offer_id":68000237224151,"sku":"BOSCH-DS939","price":146.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/4933\/1927\/files\/DET200DS939.png?v=1793973839","url":"https:\/\/shop.commercialdoorworx.com\/products\/bosch-ds939-360-panoramic-ceiling-mount-pir-intrusion-motion-detector-white","provider":"Commercial Door Worx","version":"1.0","type":"link"}