{"product_id":"fsd-751rpl-notifier-intelligent-photoelectric-duct-smoke-detector","title":"FSD-751RPL | Notifier Intelligent Photoelectric Duct Smoke Detector","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp\u003eThe FSD‑751RPL is an intelligent photoelectric low‑flow duct smoke detector from Notifier, designed for precise detection of smoke in HVAC duct systems.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 99.964%; height: 264.8px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eNotifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003e\u003cspan\u003eFire Safety\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eFSD-751RPL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003e\u003cspan\u003eSmoke Detector\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eDevice Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eDuct Smoke Detector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eDetection Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003ePhotoelectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eRelay Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eDPDT (Double Pole Double Throw) Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003e120\/240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eIntelligent \/ Addressable (FlashScan®)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eAir Velocity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003e100 to 4,000 ft\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eHVAC duct smoke detection and fan shutdown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 19.6px;\"\u003e\u003cstrong\u003eSampling Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 19.6px;\"\u003eTelescoping Sampling Tube (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 10px;\"\u003e\n\u003ctd style=\"width: 29.2337%; height: 10px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%; height: 10px;\"\u003eDirectly on HVAC duct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 29.2337%;\"\u003e\u003cstrong\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70.6331%;\"\u003e2.59 lbs\u003cbr\u003e\n\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 FSD-751RPL\u003c\/h4\u003e\n\u003cp\u003eThe FSD‑751RPL is part of Notifier’s intelligent line of photoelectric duct smoke detectors, engineered to provide accurate and early smoke detection in HVAC systems. Designed for use with Notifier’s FlashScan® addressable fire alarm panels, this model combines precise sensing technology with a low-flow sampling system to monitor air velocities as low as 100 ft\/min. Equipped with a DPDT relay, it can directly control HVAC equipment such as fans and dampers in response to smoke events. Built-in tamper detection and compatibility with remote test accessories make the FSD‑751RPL a highly dependable solution for duct-based fire protection.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePhotoelectric Sensing Technology: Delivers reliable smoke detection in HVAC ducts using a high-sensitivity optical sensor.\u003c\/li\u003e\n\u003cli\u003eFlashScan® Addressable Protocol: Supports fast, intelligent communication with Notifier panels for precise event identification.\u003c\/li\u003e\n\u003cli\u003eLow-Flow Sampling: Operates across duct air velocities from 100 to 4,000 ft\/min with patented telescoping sampling tubes.\u003c\/li\u003e\n\u003cli\u003eDPDT Relay Output: Enables direct fan shutdown or HVAC system control upon smoke detection.\u003c\/li\u003e\n\u003cli\u003eTamper Detection: Triggers a trouble signal and fan shutdown if the unit’s cover is left open for more than 20 minutes.\u003c\/li\u003e\n\u003cli\u003eRemote Testing \u0026amp; Annunciation: Compatible with RTS451, RTS451KEY, and RA400Z for simplified system inspection and status display.\u003c\/li\u003e\n\u003cli\u003eMulti-Power Input: Accepts 24 VDC, 24 VAC, or 120\/240 VAC auxiliary power input to meet diverse installation needs.\u003c\/li\u003e\n\u003cli\u003eDurable Housing: Built for duct-mount applications with strong materials and easy-access maintenance design.\u003c\/li\u003e\n\u003cli\u003eEnvironmental Ratings: Operates in temperatures from 32°F to 131°F (0°C to 55°C) and humidity up to 93% non-condensing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Notifier FSD‑751RPL offers a powerful combination of intelligent detection, HVAC integration, and flexible mounting, making it ideal for commercial buildings requiring reliable duct smoke sensing. While now discontinued, it remains a trusted component in existing systems and a reference point for current-generation addressable duct detectors.\u003c\/p\u003e","brand":"Notifier","offers":[{"title":"Default Title","offer_id":49105264279808,"sku":"FSD-751RPL","price":1953.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/44ff52d45be443e3b6db57770ba9f0d8.jpg?v=1785543779","url":"https:\/\/alotechparts.com\/products\/fsd-751rpl-notifier-intelligent-photoelectric-duct-smoke-detector","provider":"Alo Tech Solutions","version":"1.0","type":"link"}