{"product_id":"edwards-signaling-sd-2w-sd-series-superduct-2-wire-duct-smoke-detector","title":"Edwards Signaling SD-2W SD Series SuperDuct 2-Wire Duct Smoke Detector, Photoelectric, 16-30VDC Operating Voltage, 50-750 Ohm Alarm Impedance","description":"\u003ch4\u003eEdwards-Signaling Duct Detector, 2 Wire, SD-2W\u003c\/h4\u003e\n\u003cdiv class=\"page_description\"\u003eSuperDuct is a slim feature-rich alternative to bulky duct smoke detectors. Designed for easy installation and superb reliability, SuperDuct represents the perfect balance of practical design and advanced technology.\u003c\/div\u003e\n\u003cdiv class=\"wysiwyg_content\"\u003eSuper Duct 2 wire detector features a unique design that speeds installation and simplifies maintenance. Removable dust filters, conformally coated circuit boards, and optional water-resistant gaskets keep contaminants away from components, ensuring years of trouble-free service.  When cleaning is required, the assemblies come apart easily and snap back together in seconds. SuperDuct detectors use differential sensing to prevent small environmental changes from triggering false alarms.\u003c\/div\u003e\n\u003cdiv class=\"wysiwyg_content\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"wysiwyg_content\"\u003eA rapid change in environmental conditions, such as smoke from a fire, causes the detector to automatically signal an alarm condition but dust and debris accumulated over time does not change alarm sensitivity. The detector assembly cover provides easy access to the smoke sensor, its wiring connections, sample and exhaust tube fittings, and the smoke chamber itself. Air enters the detector’s sensing chamber through a sampling tube (ordered separately) that extends into the duct and is directed back into the ventilation system through an exhaust tube (included).\u003c\/div\u003e\n\u003cdiv class=\"wysiwyg_content\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"wysiwyg_content\"\u003eThe difference in air pressure between the two tubes pulls the sampled air through the sensing chamber. When a sufficient amount of smoke is detected in the sensing chamber, the detector initiates an alarm.\u003c\/div\u003e\n\u003cdiv class=\"wysiwyg_content\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"system_list_container\"\u003e\n\u003cdiv id=\"features_area\" class=\"list_section_container\"\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul id=\"system_features\"\u003e\n\u003cli\u003ePCB mounted photoelectric detector with onboard intelligence\u003c\/li\u003e\n\u003cli\u003eEnvironmental compensation with differential sensing for reliable, stable, and drift-free sensitivity\u003c\/li\u003e\n\u003cli\u003eStatus LEDs remain visible through clear assembly cover\u003c\/li\u003e\n\u003cli\u003eCover monitor switch for added security\u003c\/li\u003e\n\u003cli\u003eStandard sampling tube spacing for easy drop-in migration from other detectors\u003c\/li\u003e\n\u003cli\u003eCompatible with most Kidde®, FENWAL®, and Chemetron® Conventional Control Panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"technicals_area\" class=\"list_section_container\"\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul id=\"technical_specifications\"\u003e\n\u003cli\u003eWide 0.79% to 2.46% obscuration\/ft. smoke sensitivity\u003c\/li\u003e\n\u003cli\u003e-4°F to 158°F (-20°C to 70°C) operating range with 100 ft\/min. to 4000 ft\/min. air velocity rating assures reliability under harsh environmental conditions\u003c\/li\u003e\n\u003cli\u003eLess than 2\" deep for easy installation and applications where space is tight\u003c\/li\u003e\n\u003cli\u003eMagnet-activated test switch\u003c\/li\u003e\n\u003cli\u003eOne Form C auxiliary alarm relay for controlling ancillary equipment (e.g., HVAC controls)\u003c\/li\u003e\n\u003cli\u003eEasy access to field connection terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"listings_area\" class=\"list_section_container\"\u003e\n\u003ch4\u003eListing \u0026amp; Approvals\u003c\/h4\u003e\n\u003cul id=\"listings\"\u003e\n\u003cli\u003eFM Approved\u003c\/li\u003e\n\u003cli\u003eUL, ULC Listed\u003c\/li\u003e\n\u003cli\u003eCSFM Approved\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Edwards Signaling","offers":[{"title":"Default Title","offer_id":43247299264577,"sku":"ED-SD2W","price":194.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/2465\/9009\/files\/4d8e0f3d-51iqovavavl._ac_us1500.jpg?v=1772005402","url":"https:\/\/www.fireandsafetyplus.com\/products\/edwards-signaling-sd-2w-sd-series-superduct-2-wire-duct-smoke-detector","provider":"Fire and Safety Plus","version":"1.0","type":"link"}