?Work as a standalone alarm hub or wireless siren.
?20 wireless defense zones.
?At most 5 wireless remote controllers.
?Alarm with both voice prompts and quick flash strobe.
?Wireless learning code: adding new accessories, convenient , safe and efficient
?One-key-control function: Remote control  to Arm/emergency alarm/disarm
?Built-in rechargeable Lithium battery
?Smart screw&mount base.