Infrared Motion Sensor Door Bell

Item specifications:

* Power supply : DC 9-15V (battery not included)

* Detection range: 4-8 m

* Volume: 4 levels adjustable (Can't adjust volume at alarm mode)

* Induction method : infrared sensor triggered

* 3 modes: Voice Alarm Music, at "Voice" mode: Human voice, dingdong, ninhao, huan ying guang ling 32 music to welcome your guests

* Ambient temperature/humidity : -10 -40 5% -95% RH

* Detection Angle: Horizontal Angle of 110 degrees, vertical Angle of 15 degrees

* The main function: Automatic body sensing , ultra-long , wide-angle detection. Adjustable direction (with stand). Host built-in speakers, alarm loudness of 75-95 db

* Installation : No need professional personnel, easy to install yourself

* Installation height: 1.5m-2.5m

* Music: 32 music and vocals optional

* Size: Height 7.5cm Width 8cm , thickness 4.5 cm (with base - base can be flat or fixed on top)

* Battery: 3 x AAA batteries (batteries are not included)