{"product_id":"siemens-fdo421-s54320-f4-a1-smoke-detector-same-day-shipping-sealed","title":"Siemens FDO421 Photoelectric Smoke Detector","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe Siemens FDO421 Photoelectric Smoke Detector is a plug-in, two-wire, addressable photoelectric smoke detector. The FDO421 supports two operation modes: polarity insensitive mode and isolator mode.\u003c\/p\u003e\n\u003cp\u003eThe FDO421 may be used with Siemens Model ‘H’ series devices on the same loop (with Desigo fire-alarm control panels FACPs or FireFinder XLS FACPs).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"FIRE ALARM SYS","offers":[{"title":"Default Title","offer_id":51572009664832,"sku":"394928966546","price":130.15,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/6466\/0032\/files\/6978c3acb3b4701d8eed8a3e7b64f406.jpg?v=1772158564","url":"https:\/\/firealarmsys.com\/products\/siemens-fdo421-s54320-f4-a1-smoke-detector-same-day-shipping-sealed","provider":"FIRE ALARM SYS","version":"1.0","type":"link"}