This remote control works with SAFE TECH Interlinked Range. To test the fire alarms, press the "TEST" button on the remote controller. Installed on the wall for convenience. The silence function activates when a detector is triggered. Don't press "Hush" during testing, as detectors automatically silence after 8-15 seconds. According to law, the detectors should be tested every week. If one detector is triggered, all detectors in the group sound. Pressing "Hush" will silence all except the triggered alarm. Easily identify the triggered floor or area. Simplify safety and stay protected with our wireless remote control. Additionally this remote controller comes with a replacable battery. Note: Remote Control ONLY, Alarms sold separately Product Warranty 2 years * Battery life may vary based on the configuration, application usage, power management settings and features utilized. * We try to get you the best quality photo and size. However, all pictures shown here are for illustratio