- 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;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 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.
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