{"product_id":"silent-knight-sk-duct-w-smoke-detector-responsive-support","title":"SK-DUCT-W | Silent Knight Photoelectric Low-Flow Duct Smoke Detector with Remote Test","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe Silent Knight SK-DUCT-W Photoelectric Duct Smoke Detector is a low-flow duct-mounted detector designed to monitor air handling systems for the presence of smoke. Featuring a clear cover and remote test capability, it enables visual inspection and convenient functional verification. Operating on 15–32 VDC, it provides reliable smoke detection in HVAC ducts for commercial fire alarm systems.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 254.719px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003eSilent Knight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003eFire Alarm Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003eSK-DUCT-W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003eDuct Smoke Detectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eDetection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003ePhotoelectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e15 – 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eStandby Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e200 µA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eMaximum Alarm Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e6.2 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e–4° to 158°F (–20° to 70°C); 32° to 120°F (0° to 49°C) with module installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e–22° to 158°F (–30° to 70°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e0% to 93% RH Non-Condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eAir Velocity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e100 – 4000 ft.\/min. (0.5 – 20.3 m\/sec.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eRectangular Footprint Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e14.38 in L × 5 in W × 2.5 in D (37 × 12.7 × 6.36 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eSquare Footprint Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e7.75 in L × 9 in W × 2.5 in D (19.7 × 22.9 × 6.35 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.2602%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.5205%;\"\u003e1.8 lb (0.82 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About SK-DUCT-W\u003c\/h4\u003e\n\u003cp data-start=\"424\" data-end=\"1011\"\u003eThe SK-DUCT-W is a photoelectric duct smoke detector engineered for installation in HVAC ductwork to detect smoke transported by air movement. It is designed to operate across a wide air velocity range from 100 to 4000 feet per minute, making it suitable for various airflow conditions. The unit supports a remote test function, allowing maintenance personnel to perform testing without direct access to the detector housing. Built for compatibility with Silent Knight addressable modules, it operates within a regulated 15–32 VDC range and meets environmental requirements for commercial fire alarm applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-end=\"1102\" data-start=\"1085\"\u003eKey Features:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePhotoelectric Smoke Detection: Uses optical sensing technology for early smoke identification.\u003c\/li\u003e\n\u003cli\u003eLow-Flow Capability: Operates in air velocities from 100 to 4000 ft.\/min.\u003c\/li\u003e\n\u003cli\u003eClear Cover Design: Allows visual inspection of chamber and status indicators.\u003c\/li\u003e\n\u003cli\u003eRemote Test Function: Supports remote functional testing for maintenance efficiency.\u003c\/li\u003e\n\u003cli\u003eWide Voltage Range: Operates from 15 to 32 VDC.\u003c\/li\u003e\n\u003cli\u003eLow Standby Current: 200 µA @ 24 VDC with LED blink enabled.\u003c\/li\u003e\n\u003cli\u003eLED Alarm Indication: Maximum alarm current of 6.2 mA @ 24 VDC.\u003c\/li\u003e\n\u003cli\u003eFlexible Footprint Options: Available in rectangular and square mounting configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SK-DUCT-W delivers the reliability and precision required for HVAC duct smoke detection in commercial fire alarm systems.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":51175155990826,"sku":"SK-DUCT-W","price":322.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_265a533a-fb44-4d3e-9894-b353b2076912.webp?v=1771871243","url":"https:\/\/iqelectro.com\/products\/silent-knight-sk-duct-w-smoke-detector-responsive-support","provider":"IQElectro","version":"1.0","type":"link"}