{"product_id":"system-sensor-2d51-4wire-photo-sensor","title":"SYSTEM SENSOR 2D51 4wire photo sensor","description":"\u003cp\u003eThe 2D51 can be used as a pendant mount detector in no-flow\/ low-flow air-handling systems (0-4,000 FPM). The pendant \/plenum mounted 2D51 is to be installed into a B210LP base and wired to a D4P120 power board-only control unit. The D4P120 power board is capable of controlling up to two 2D51 sensors. Pendant mounted in a standard electrical box within the duct, the twist-in\/twist-out head allows easy removal from the base for quick cleaning and maintenance.\u003c\/p\u003e\n\u003cp\u003eThe 2D51 heads can be locally tested using a magnet or by using the test\/reset push button on the D4P120 power board. Remote testing is accomplished using the RTS151, RTS151KEY, RTS-2 or RTS-AOS accessories connected to the D4P120 power board. The APA151, RTS2 and RTS2-AOS Remote Annunciators with Piezo Alarm can also be connected to the D4P120 power board to provide an audible and visible indication of smoke detector status.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMain Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLow-profile smoke detector design\u003c\/li\u003e\n\u003cli\u003eLow standby current\u003c\/li\u003e\n\u003cli\u003eTwo LEDs blink in standby\u003c\/li\u003e\n\u003cli\u003eDetector head plugs easily into base\u003c\/li\u003e\n\u003cli\u003eBuilt-in test switch\u003c\/li\u003e\n\u003cli\u003eField sensitivity metering of detector to meet the requirements of NFPA 72 with the use of RTS2\/RTS2-AOS and SENS-RDR\u003c\/li\u003e\n\u003cli\u003eDesigned for mounting on a standard electrical box\u003c\/li\u003e\n\u003cli\u003eSEMS screws for easy wiring and positive wire retention\u003c\/li\u003e\n\u003cli\u003eRemovable cover and insect screen for field cleaning\u003c\/li\u003e\n\u003cli\u003eRemote push button Test\/Reset, LEDs provide visual indications\u003c\/li\u003e\n\u003cli\u003eOnboard supervisory and alarm relays\u003c\/li\u003e\n\u003cli\u003eAccepts 24 or 120V supply voltage\u003c\/li\u003e\n\u003cli\u003eInterconnect up to 100 units for common functions\u003c\/li\u003e\n\u003cli\u003eCompatible for interconnection with System Sensor InnoviarFlex™ D4120 or D4120W duct smoke detectors and remote accessories\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":43247292481601,"sku":"BK-2D51","price":90.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/2465\/9009\/files\/fd234ef5-bk-2d51.png?v=1770770522","url":"https:\/\/www.fireandsafetyplus.com\/products\/system-sensor-2d51-4wire-photo-sensor","provider":"Fire and Safety Plus","version":"1.0","type":"link"}