{"product_id":"system-sensor-4-wire-photoelectric-low-flow-duct-smoke-detector-24vdc-120vac-d4120a","title":"System Sensor : 4-Wire Photoelectric Low-Flow Duct Smoke Detector, 24VDC\/120VAC – D4120A","description":"\u003ch3\u003e\u003cstrong\u003eSystem Sensor Model D4120A — Specifications\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel No.:\u003c\/strong\u003e D4120A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 4-Wire Photoelectric Low-Flow Duct Smoke Detector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor:\u003c\/strong\u003e Photoelectric, with plug-in sensor head for improved false-alarm immunity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Velocity Rating:\u003c\/strong\u003e 100 ft\/min to 4,000 ft\/min (0.5 m\/s to 20.32 m\/s)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range:\u003c\/strong\u003e –4 °F to 158 °F (–20 °C to 70 °C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Humidity Range:\u003c\/strong\u003e 0% to 95% RH (non-condensing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Configuration:\u003c\/strong\u003e Flexible; supports square or rectangular duct footprints\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSampling Tube Installation:\u003c\/strong\u003e Front or back installation—no tools required\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEnclosure Features:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eIncreased wiring space and ¾″ conduit knockout\u003c\/li\u003e\n\u003cli\u003eHigh-contrast terminal labels for easy wiring\u003c\/li\u003e\n\u003cli\u003ePivoting housing for flexible mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e Easy-access Test\/Reset button that works with cover in place; supports remote testing (RTS151KEY or RTS2-AOS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndications:\u003c\/strong\u003e Dual LED status indicators (Standby, Maintenance, Trouble, Alarm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterconnectivity:\u003c\/strong\u003e Up to 50 units can be interconnected; only the alarmed unit activates, isolating the source of smoke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Protection:\u003c\/strong\u003e Built-in short-circuit protection from operator wiring errors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Configuration:\u003c\/strong\u003e DIP-switch settings for cover tamper, number of sensors, and trouble shutdown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Contacts:\u003c\/strong\u003e Two DPDT Form-C relays, rated for AC\/DC control use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e 24 VAC\/DC or 120 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackward Compatibility:\u003c\/strong\u003e Compatible with existing Innovair accessories and products\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"System Sensor","offers":[{"title":"Default Title","offer_id":51602301288765,"sku":"D4120A","price":247.78,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0938\/2500\/7933\/files\/78524f8285c778a9d52c1.jpg?v=1779480272","url":"https:\/\/greencanadaled.ca\/products\/system-sensor-4-wire-photoelectric-low-flow-duct-smoke-detector-24vdc-120vac-d4120a","provider":"Green Canada Led","version":"1.0","type":"link"}