... be used for remote monitoring * This product can Voice-activated automatically call back* Plus a flashlight function, ... to the A position, using SMS GDM * Voice-activated functions:To switch out to the B position ... , when you do not have voice-activated switch out to the A position, ... battery.* When to use voice-activated 3-5 days standby. Do not have voice-activated 6-15 days * Standby ...