... vision 5.Built-in battery during power failure wireless home Emergency button for kids old peopleSPECIFICATION: 1) with A built-in ... /part armed zone,sensor sensor in the zone) Description: When emergency thing happened, such as intruder doing violence, user's pathological ... is activate or not, the panic button immediately gives off emergency help signal. The panic button buzzer hoots, at the same ...