Revex Expansion Transmitter Wireless Sound/Impact Sensor X60 & Receiver Chime X800 - New & Unused Set ▪️Revex X Series Expansion Transmitter Wireless Sound/Impact Sensor X60 【Description】 Size (approx.): Width 5.5 x Depth 2.45 x Height 8.7cm Material: ABS (Acrylonitrile Butadiene Styrene) resin Country of Origin: China Set Contents: Sensor body, 2 wood screws, transmitter mounting plate, double-sided tape (large x 1 / small thin type x 1 set / small thick type x 1 set) Batteries Used: 2 x AAA alkaline batteries (sold separately) Battery Life: Approximately 2 months (10 transmissions/day, at 20 degrees Celsius) Transmission Frequency: 315MHz ▪️Revex Wireless Chime X Series Receiver Expansion Receiver Chime X800 【Description】 Size: Width 63 x Height 96 x Depth 33mm Weight: Approx. 160g (including batteries) Material: ABS (Acrylonitrile Butadiene Styrene) resin Country of Origin: China Power Supply: 3 x AA alkaline batteries (sold separately)