{"product_id":"dsc-ws4936-wireless-photoelectric-smoke-detector","title":"DSC WS4936 Wireless Photoelectric Smoke Detector","description":"\u003cp\u003eThe Tyco DSC WS4936 is a wireless life-safety detector that combines\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ephotoelectric smoke sensing, fixed-temperature heat detection, and rate-of-rise heat detection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein a single low-profile device. Designed for DSC 433 MHz wireless security systems, the detector transmits smoke alarms, heat alarms, tamper conditions, low-battery conditions, and detector trouble information to a compatible control panel or wireless receiver.\u003c\/p\u003e\n\u003cp\u003eThe WS4936 provides a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e135 F (57 C) fixed-temperature heat alarm and rate-of-rise detection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat responds when temperature increases rapidly over a short period. Its photoelectric smoke sensor has a published alarm sensitivity range of 1.26% to 2.39% obscuration per foot. Automatic drift compensation helps maintain smoke-sensing performance as environmental conditions change, while high- and low-sensitivity reporting alerts the control system when the detector requires attention.\u003c\/p\u003e\n\u003cp\u003eThe detector incorporates an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e85 dBA minimum ANSI Temporal 3 alarm sounder\u003c\/strong\u003e, a local test button, and an 8-minute automatically resettable hush function. Three AAA batteries power the detector and provide approximately 3 years of expected service under typical operating conditions. Low-battery monitoring provides approximately 14 days of remaining battery indication, and the WS4936 transmits supervisory messages to the control panel at 64-minute intervals.\u003c\/p\u003e\n\u003cp\u003eThe DSC WS4936 measures\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 inches (125 mm) in diameter by 2.5 inches (63 mm) high\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand weighs approximately 8.75 oz (243 g) with batteries installed. It operates from 40 F to 100 F (4.4 C to 37.8 C), with heat detection specified from 32 F to 100 F (0 C to 37.8 C), and supports 15% to 90% non-condensing relative humidity. The North American WS4936 is listed to UL 268 and ULC-S531 and is designed for compatible DSC residential and small-business fire protection systems.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"DSC","offers":[{"title":"Default Title","offer_id":53116973547840,"sku":"WS4936","price":40.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/6466\/0032\/files\/WS49361.jpg?v=1788875377","url":"https:\/\/firealarmsys.com\/products\/dsc-ws4936-wireless-photoelectric-smoke-detector","provider":"FIRE ALARM SYS","version":"1.0","type":"link"}