Knightsbridge Wireless plug in motion activated chime system

- 58 ringtones - Volume control up to 110dB - Eye catching visual alert when doorbell can't be heard - Hassle free installation, no running any wires - Learning code prevents interference from other wireless transmitters - Additional plug-in receivers or bell pushes can be added if desired - Working Frequency: 433MHz - Working Temperature: -20 - 50° C Motion Sensor - IP20 rated - 110° detection angle - 5m detection range - Requires 2 x AA batteries (not included) - Range of approx. 75-150m* Receiver - Indoor use only - Power consumption less than 10mW - Mains powered - Range of approx. 75-150m* *Dependent on environmentTechnical Specification:Depth (mm): 26.2Dimensions: Height: 81mmWeight: 0.19KgWarranty: 1 Year