{"product_id":"sd505-adhr-silent-knight-addressable-duct-smoke-detector-for-hvac-systems","title":"SD505-ADHR | Silent Knight Addressable Duct Smoke Detector for HVAC Systems","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"168\"\u003eThe Silent Knight SD505-ADHR is an addressable duct smoke detector designed for HVAC system monitoring. It provides early detection of smoke in air ducts, supporting fire safety by controlling fans, dampers, and related equipment.\u003c\/p\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"144\" data-end=\"396\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 489.845px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eSilent Knight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eFire Alarm Equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eSD505-ADHR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eDuct Smoke Detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eSD505 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eAddressable duct smoke detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003e24 VAC\/VDC or 120\/240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eAmbient Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003e32°F to 100°F (0°C to 37°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eHumidity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003e10% to 85% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eDetects smoke in HVAC ducts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eSilent Knight intelligent fire alarm panels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eHVAC monitoring and fire safety control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eDuct-mounted housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eIndicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eLED alarm and status indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eControl Integration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eInterfaces with fans, dampers, and shutdown systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eCommercial, institutional, and industrial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003eUL listed (where applicable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.4225%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.3582%;\"\u003e2.5 lbs (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About SD505-ADHR\u003c\/h4\u003e\n\u003cp\u003eThe SD505-ADHR is part of Silent Knight’s SD505 series of addressable devices, engineered for integration with Silent Knight intelligent fire alarm control panels. It monitors airflow within HVAC ducts and uses addressable communication to report smoke conditions directly to the control panel. With support for 24 VAC\/VDC or 120\/240 VAC operation, it is versatile for different system configurations. Designed for reliable performance in commercial and institutional environments, the SD505-ADHR helps ensure that smoke is detected and HVAC systems respond promptly to contain fire spread.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAddressable Detection: Communicates directly with Silent Knight control panels for precise location reporting.\u003c\/li\u003e\n\u003cli\u003eDuct Smoke Detection: Monitors HVAC ducts for smoke to prevent circulation of contaminants.\u003c\/li\u003e\n\u003cli\u003eFlexible Power Options: Operates on 24 VAC\/VDC or 120\/240 VAC inputs.\u003c\/li\u003e\n\u003cli\u003eSystem Integration: Interfaces with fans, dampers, and shutdown controls.\u003c\/li\u003e\n\u003cli\u003eEnvironmental Range: Operates from 32°F to 100°F with up to 85% humidity.\u003c\/li\u003e\n\u003cli\u003eReliable Operation: Ensures early smoke detection in HVAC systems.\u003c\/li\u003e\n\u003cli\u003eCommercial Applications: Suitable for offices, schools, hospitals, and industrial facilities.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SD505-ADHR delivers the reliability and precision required for addressable duct smoke detection in modern fire alarm systems.\u003c\/p\u003e","brand":"Silent Knight","offers":[{"title":"Default Title","offer_id":49105162764544,"sku":"SD505-ADHR","price":1321.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_99c03cb3-e155-4345-a031-c799f2be12d0.webp?v=1785541681","url":"https:\/\/alotechparts.com\/products\/sd505-adhr-silent-knight-addressable-duct-smoke-detector-for-hvac-systems","provider":"Alo Tech Solutions","version":"1.0","type":"link"}