{"product_id":"system-sensor-2w-b-i3-2-wire-photoelectric-smoke-detector","title":"System Sensor 2W-B i3 Series 2-Wire Photoelectric Smoke Detector","description":"\u003cp class=\"isSelectedEnd\"\u003eThe \u003cstrong\u003eSystem Sensor 2W-B\u003c\/strong\u003e is a commercial 2-wire smoke detector engineered for compatible conventional fire alarm systems. As part of the System Sensor i3 Series, it utilizes photoelectric smoke sensing with automatic drift compensation to provide dependable smoke detection while helping minimize nuisance alarms caused by dust accumulation and environmental changes.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eIts low-profile housing, plug-in detector head, and dual-color LED indicators simplify installation, maintenance, and routine testing. This product is intended exclusively for commercial fire alarm installations.\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003eProduct Functions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDetects airborne smoke\u003c\/li\u003e\n\u003cli\u003eInitiates alarm conditions through compatible fire alarm control panels\u003c\/li\u003e\n\u003cli\u003eAutomatic drift compensation\u003c\/li\u003e\n\u003cli\u003eContinuous smoke monitoring\u003c\/li\u003e\n\u003cli\u003eDual-color LED status indication\u003c\/li\u003e\n\u003cli\u003eMagnetic functional testing\u003c\/li\u003e\n\u003cli\u003eMaintenance notification with compatible modules\u003c\/li\u003e\n\u003cli\u003eSupports routine inspection and servicing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003eElectrical \u0026amp; System Information\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe System Sensor 2W-B operates on compatible\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2-wire conventional initiating device circuits\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith an operating voltage range of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8.5–35 VDC\u003c\/strong\u003e. Automatic drift compensation and smoothing algorithms continuously adjust detector sensitivity to maintain dependable operation over time.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eWhen paired with the optional\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2W-MOD2 maintenance module\u003c\/strong\u003e, the detector supports remote maintenance indication and loop testing from the fire alarm control panel without requiring individual detector testing.\u003c\/p\u003e\n\u003ch3\u003eMounting \u0026amp; Design\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe 2W-B includes an integrated mounting base compatible with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3½-inch and 4-inch octagonal boxes, single-gang boxes, and 4-inch square electrical boxes with plaster rings\u003c\/strong\u003e. It may also be mounted directly to drywall using the supplied anchors where permitted by applicable codes.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThe plug-in detector head allows quick removal for cleaning, inspection, testing, or replacement without disturbing the installed field wiring.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSystem Sensor\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eParent Company:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHoneywell\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2W-B\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ei3 Series\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCommercial 2-Wire Smoke Detector\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eDetection Method:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePhotoelectric Smoke Sensing\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eCircuit Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2-Wire Conventional\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8.5–35 VDC\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eMaximum Ripple Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e30%\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eAverage Standby Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e50 µA\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003ePeak Standby Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e100 µA\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eMaximum Alarm Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e130 mA (Panel Limited)\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eNominal Sensitivity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.5% Obscuration per Foot\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eStatus Indicators:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual-Color LEDs\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eTesting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt-In Magnetic Test Capability\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated Plug-In Base\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e32°F to 100°F (0°C to 38°C)\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eOperating Humidity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUp to 95% RH Non-Condensing\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndoor Commercial Fire Alarm Systems\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eListings:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUL 268, ULC (Canadian models), FM Approved, CSFM, MEA, and additional regional approvals where applicable. Verify product labeling for the intended installation.\u003c\/p\u003e","brand":"SYSTEM SENSOR","offers":[{"title":"Default Title","offer_id":54014877335859,"sku":"2W-B","price":45.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/9785\/1699\/files\/SystemSensor2W-Bi31.webp?v=1788815483","url":"https:\/\/plenasupply.com\/products\/system-sensor-2w-b-i3-2-wire-photoelectric-smoke-detector","provider":"Plena Supply","version":"1.0","type":"link"}