General Information Type of transmission: wireless Power supply: 4 x AA Detection angle: 110 Grad The range of motion detection: 6m Number of ringtones: 1 Doorbell volume (db): 90 Volume adjustment: no Optical indication: no Dimensions (width x height x depth [mm]): 95 / 125 / 50 Power supply of the transmitter: 3 x LR44 Dimensions of the transmitter (width x height x depth [mm]): 60 / 37 / 20 Protection rating of the transmitter: IP20 Colour: white Possibility of extension : no Other features: possibility of using a 6VDC power supply