【Remote Control Only】Remote Control ONLY, Compatible with SAFE TECH AJ Series Interlinked Alarms 【Wireless Remote Control】Battery-powered, Easy Pairing,Test and Silence the Detectors 【Wireless Interlinked Alarms】 SAFE TECH detectors feature a Sealed & Tamper proof battery and interlink by radio frequency alarms wirelessly interlink with each other. If one alarm is triggered - All alarms will sound together. Keep your family safe 【10 Year Battery】 All smoke heat alarms come with a built in 10 Year lithium ion battery. And use the latest photoelectric sensor technology which is 5 times more accurate than conventional sensors 【Scotland Law Compliant】 SAFE TECH interlinked alarms are 100% compliant with the recent change in Scottish Law. Certified to BS EN14604:2005/AC2008,ISO 9001:2015 Certificate， Fully Insured UK Company 【Easy Set Up】 Use our easy to follow Video or Written guides to interlink the alarms. Simply fix the alarm in the desired location using the supplied adhesive screws, Weight: 58.0 grams, Manufacturer: SAFE TECH