... person and so on.3. Console have blackout alarm, it is convenient for host to monitor the ... , execut home defense,outgoing defense/withdrawal or urgent alarm through wireless control.5. To set console of defense ... of houuse and so on.6. When it alarm, console has a electric relay to control fan-out ... interface of trumpet,mute sounds ,change the sound of alarm.7. Console built-in battery, change DC & AC ...