{"product_id":"union-doorsense-j-8755a-hold-open-device","title":"UNION DoorSense J-8755A Hold Open Device","description":"\u003cp\u003eIntroducing the Union DoorSense: the ultimate solution for fire door safety and convenience. This intelligent door hold open device is designed to provide a reliable and straightforward way to keep fire doors open when needed, without compromising safety.\u003c\/p\u003e\n\u003cp\u003eWith its easy installation process—no complicated wiring required—the DoorSense fits seamlessly on the bottom of fire doors equipped with size 3 to 7 door closers. It continuously monitors for fire alarms, and when it detects sounds over 80dB, it automatically releases the door to ensure compliance with fire safety regulations.\u003c\/p\u003e\n\u003cp\u003eThe DoorSense J-8755A range is specifically fire rated for timber (FD120) fire doors and carries the CE Mark to EN 1155, along with EMC testing certification. This guarantees that you are investing in a high-quality, safe product.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with size 3 to size 7 door closers\u003c\/li\u003e\n\u003cli\u003eCurved, fire-retardant casing for impact deflection and aesthetic appeal\u003c\/li\u003e\n\u003cli\u003eIdeal for retrofitting existing doors\u003c\/li\u003e\n\u003cli\u003eBattery-operated and wireless for hassle-free installation\u003c\/li\u003e\n\u003cli\u003eAdjustable release sensitivity and a timer for automatic release during non-use periods\u003c\/li\u003e\n\u003cli\u003eFail Safe Mode ensures the DoorSense releases automatically in emergencies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eElevate your fire safety measures with the Union DoorSense, where innovation meets compliance.\u003c\/p\u003e","brand":"Aldridge","offers":[{"title":"Black","offer_id":44564669300825,"sku":"L27398-AL","price":234.95,"currency_code":"GBP","in_stock":true},{"title":"Red","offer_id":44564669333593,"sku":"L27399-AL","price":234.95,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":44564669366361,"sku":"L27400-AL","price":234.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9035\/8617\/files\/Screenshot_2026-08-22_150316.png?v=1787404124","url":"https:\/\/metalix.co.uk\/products\/union-doorsense-j-8755a-hold-open-device","provider":"Metalix Hardware","version":"1.0","type":"link"}