Description :

KERUI M5 Multifunctional Electronic Infrared Wireless Welcome Alarm Sensor Doorbell Guard Defence
 

Features :

Infrared sensor adopt to digital fuzzy treatment.
Automatic temperature compensation.
Radio frequency anti-interference.
Integrating a variety of functions， welcome， wireless doorbell and guard defence.
Choice of power supply: 3pcs AAA battery and 9-15v power adapter.
Support human voice， 32 beautiful songs and alarm.
4 levels of adjustable sound volume.

Package includeds :

1 x KERUI M5 Welcome Alarm
1 x Power Supply (US / EU / AU / UK Plug for Optional~)
1 x Set of Installation Accessories
 

Details pictures :