Revex Wireless Chime Intercom Motion Sensor Chime Set LCW600

Dimensions (approx.): Motion sensor transmitter: W7.7 x H8.3 x D3.5cm (including mounting and angle adjustment stand), receiving chime: W8.0 x H8.0 x D2.8cm Weight (approx.): Motion sensor transmitter: 89g (batteries not included), Chime receiver: 70g (batteries not included) Material: ABS (acrylonitrile butadiene styrene) resin Country of Origin: China Power Supply: Motion Sensor Transmitter: DC 4.5V, 3 AAA alkaline batteries (sold separately) or dedicated AC adapter X0505/X0505B (sold separately). Battery life: approx. 1.5 years (when transmitting 10 times per day). Chime Receiver: DC 4.5V, 3 AA alkaline batteries (sold separately) or dedicated AC adapter X0505/X0505B (sold separately). Battery life: approx. 6 months (when receiving 10 times per day).