{"title":"System Sensor Duct Detectors","description":"\u003cp\u003eSystem Sensor duct smoke detectors and housings for HVAC air-handler shutdown and supervisory monitoring under NFPA 90A and IMC. Includes the DNR\/DNRW non-relay 4-wire platform with integral photoelectric head, the D4120\/D4120W 4-wire conventional duct detector with integral relays, and the DH400OE-1 housing for separately ordered SLC-addressable or 2-wire sensors.\u003c\/p\u003e\u003cp\u003eD4120 supports conventional zones on Notifier, Fire-Lite, Silent Knight, and Gamewell-FCI FACPs. UL 268A listed.\u003c\/p\u003e","products":[{"product_id":"system-sensor-dnr-duct-smoke-detector","title":"System Sensor DNR DNR Duct Smoke Detector","description":"\u003cp\u003eSystem Sensor DNR DNR conventional duct smoke detector. System Sensor (Honeywell brand) commercial fire-alarm device — compatible with Notifier, Gamewell-FCI, Silent Knight, and Fire-Lite control panels per device family.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":49662236459301,"sku":"DNR","price":202.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7648\/4645\/files\/system-sensor-duct-detectors-default-title-system-sensor-dnr-duct-detector-31897172803808.jpg?v=1771297467"},{"product_id":"system-sensor-dnrw","title":"System Sensor DNRW DNR Duct Smoke Detector","description":"\u003cp\u003eSystem Sensor DNRW DNR conventional duct smoke detector. System Sensor (Honeywell brand) commercial fire-alarm device — compatible with Notifier, Gamewell-FCI, Silent Knight, and Fire-Lite control panels per device family.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":51722988814629,"sku":"DNRW","price":231.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7648\/4645\/files\/system-sensor-duct-detectors-default-title-system-sensor-dnrw-duct-smoke-detector-detector-head-sold-separately-31897169330400.jpg?v=1771297351"},{"product_id":"system-sensor-d4120w","title":"System Sensor D4120W D4120 4-Wire Duct Smoke Detector","description":"\u003cp\u003eSystem Sensor D4120W D4120 4-wire conventional duct smoke detector. System Sensor (Honeywell brand) commercial fire-alarm device — compatible with Notifier, Gamewell-FCI, Silent Knight, and Fire-Lite control panels per device family.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":51722993533221,"sku":"D4120W","price":272.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7648\/4645\/files\/system-sensor-duct-detectors-default-title-system-sensor-d4120w-duct-smoke-detector-4-wire-33531346780384.jpg?v=1771297288"},{"product_id":"system-sensor-d4120","title":"System Sensor D4120 D4120 4-Wire Duct Smoke Detector","description":"\u003cp\u003eSystem Sensor D4120 D4120 4-wire conventional duct smoke detector. System Sensor (Honeywell brand) commercial fire-alarm device — compatible with Notifier, Gamewell-FCI, Silent Knight, and Fire-Lite control panels per device family.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":51722996613413,"sku":"D4120","price":219.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7648\/4645\/files\/system-sensor-duct-detectors-default-title-system-sensor-d4120-duct-smoke-detector-32027911061728.jpg?v=1771297214"},{"product_id":"system-sensor-dh400oe-1","title":"System Sensor DH400OE-1 DH400 Duct Smoke Detector Housing","description":"\u003cp\u003eSystem Sensor DH400OE-1 DH400 conventional duct smoke detector housing. System Sensor (Honeywell brand) commercial fire-alarm device — compatible with Notifier, Gamewell-FCI, Silent Knight, and Fire-Lite control panels per device family.\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":51723002413349,"sku":"DH400OE-1","price":365.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7648\/4645\/files\/system-sensor-duct-detectors-default-title-system-sensor-dh400oe-1-weatherproof-housing-31897170313440.jpg?v=1771297089"}],"url":"https:\/\/fastalarmdistribution.com\/collections\/system-sensor-duct-detectors.oembed","provider":"Fast Alarm Distribution","version":"1.0","type":"link"}