General Information Power supply: 4 x AA Detection angle: 100st. The range of motion detection: 6m Number of ringtones: 36 Doorbell volume (db): 110 Volume adjustment: no Optical indication: no Dimensions (width x height x depth [mm]): 70 / 110 / 47 Protection rating of the transmitter: IP20 Colour: white Possibility of extension : no Other features: possibility of using a 6VDC power supply