Wireless Intelligent Doorbell Infrared Motion Sensor Voice Prompter Warning Door Bell Alarm(Blue)

Item Type:DoorbellCommunication Interface:WirelessDetection 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;at "Alarm"mode: keeps you aware of intruders;at "Music" mode: just as a doorbell with 32 music to welcome your guests Ambient temperature/humidity : -10-40 Celsius Degrees 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 includ