{"product_id":"sd505-ductr-silent-knight-analog-duct-smoke-detector-with-relay-module","title":"SD505-DUCTR | Silent Knight Analog Duct Smoke Detector with Relay Module","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003eThe SD505-DUCTR from Silent Knight is an analog duct smoke detector equipped with a pre-installed relay module designed to detect smoke and combustion byproducts in air ducts. Its metal housing ensures durability while early detection helps prevent the spread of smoke throughout HVAC systems.\u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"284\" data-end=\"574\" class=\"\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable width=\"100%\" style=\"height: 402.797px; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.9375px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 35.9375px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eCondition\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 35.9375px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 25.2969px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 25.2969px;\" class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 25.2969px;\" class=\"text-left text-body1 py-10 desktop:w-[60%]\"\u003e\u003cspan data-sheets-root=\"1\"\u003eSilent Knight\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.4844px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 26.4844px;\"\u003eCategory\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 26.4844px;\"\u003e\n\u003cdiv class=\"mt-1 md:mt-0 column-left basis-2\/4 divide-y divide-rad-gray-10 border-b-[0.0625rem] border-rad-gray-10 md:border-0\"\u003e\n\u003cdiv class=\"flex gap-[1.75rem] md:gap-x-0 xl:gap-x-[1.875rem]\"\u003e\n\u003cdiv class=\"text-body-4 w-full font-light py-5 pl-4 md:py-6 md:pl-6 text-rad-gray-70\"\u003e\n\u003cdiv class=\"max-w-[8rem] break-words\"\u003e\n\u003cspan\u003e\u003c\/span\u003eSmoke Detection\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.9219px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 21.9219px;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 21.9219px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003eSD505-DUCTR\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.1875px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 24.1875px;\"\u003e\u003cspan\u003eSubcategory\u003c\/span\u003e\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 24.1875px;\"\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003cspan\u003eDuct Smoke Detectors with Relay\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 26.625px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 26.625px;\"\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 26.625px;\"\u003e24 VDC\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth class=\"text-left text-body1 text-bold py-10 pr-10 desktop:pr-[10rem] desktop:text-nowrap\" style=\"width: 30%; text-align: left; height: 39.1875px;\"\u003eAlarm Relay Contact Rating\u003cbr\u003e\n\u003c\/th\u003e\n\u003ctd class=\"text-left text-body1 py-10 desktop:w-[60%]\" style=\"width: 69.6364%; height: 39.1875px;\"\u003e10A at 24 VDC, 115 VAC, 240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 20.625px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 20.625px;\"\u003eTrouble Relay Rating\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 20.625px;\"\u003e2.5A at 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 39.1875px;\"\u003eAux. Power Input Current\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 39.1875px;\"\u003e20mA standby, 62mA alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 19.5938px;\"\u003eSLC Input Current\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 19.5938px;\"\u003e0.5mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.1875px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 24.1875px;\"\u003eMax. SLS Resistance\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 24.1875px;\"\u003e50 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 19.5938px;\"\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 19.5938px;\"\u003e32°F to 100°F (0°C to 37°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 23.1875px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 23.1875px;\"\u003eHumidity Range\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 23.1875px;\"\u003e10%–85% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 19.5938px;\"\u003eAir Velocity Range\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 19.5938px;\"\u003e300 – 4000 ft\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 17.5938px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 17.5938px;\"\u003eDimensions (H x L x W)\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 17.5938px;\"\u003e2¼” x 9” x 7¼”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 30%; text-align: left; height: 19.5938px;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"width: 69.6364%; height: 19.5938px;\"\u003e\u003cspan\u003e3 lbs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cspan style=\"font-size: 0.875rem;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eSD505-DUCTR\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe SD505-DUCTR is a rugged analog photoelectric smoke detector with relay, suitable for integration with IntelliKnight Fire Alarm Control Panels (FACP). The unit provides early warning by sampling air from ducts and relaying smoke detection to control panels, allowing for immediate shutdown of fans or HVAC systems. The included metal backbox ensures sturdy installation, and the unit ships with a 7.5\" exhaust tube, an installation template, and screws for mounting. Designed to meet strict standards, this detector supports multiple tube lengths and is UL, CSFM, MEA, and FM approved.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-Wire SLC Connection: Ensures fast and reliable communication with the fire alarm control panel using minimal wiring for efficient system integration.\u003c\/li\u003e\n\u003cli\u003eEarly Smoke Detection: Detects smoke and combustion products in air ducts, allowing for immediate response to prevent circulation through HVAC systems.\u003c\/li\u003e\n\u003cli\u003eBuilt-in Relay Module: Automatically controls external equipment such as fans and blowers to contain smoke spread in emergency scenarios.\u003c\/li\u003e\n\u003cli\u003ePre-Installed Photoelectric Detector: Comes equipped with an SD505-APS sensor, eliminating the need for separate installation steps and reducing labor time.\u003c\/li\u003e\n\u003cli\u003eBright LED Indicators: Provides at-a-glance status updates, including alarm and communication signal, helping maintenance staff quickly assess detector health.\u003c\/li\u003e\n\u003cli\u003eDurable Metal Housing: Constructed with heavy-duty materials and a clear plastic cover for maximum protection and visibility during operation.\u003c\/li\u003e\n\u003cli\u003eMultiple Tube Length Compatibility: Supports a variety of standard intake sampling tubes to adapt to different duct sizes and system designs.\u003c\/li\u003e\n\u003cli\u003eTool-Free Maintenance Design: No screens or filters are needed, simplifying servicing and reducing false alarms due to debris buildup.\u003c\/li\u003e\n\u003cli\u003eStandards Compliant: Certified to UL, CSFM, MEA, and FM standards for dependable performance in regulated environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SD505-DUCTR offers fast and reliable smoke detection in HVAC applications for enhanced safety and compliance.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":49105348329728,"sku":"SD505-DUCTR","price":1174.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/silent_knight_sd505-ductr_duct_smoke_detector_w_relay_2.jpg?v=1785545358","url":"https:\/\/alotechparts.com\/products\/sd505-ductr-silent-knight-analog-duct-smoke-detector-with-relay-module","provider":"Alo Tech Solutions","version":"1.0","type":"link"}