Wireless Bicycle Alarm Remote Control Waterproof Electric Motorcycle Scooter Bike Security Protectio Size: 115x45x23mm Input Voltage: DC3V AA battery Remote control: CR2032 Static Current: 79uA (average) Alarm Current: 120mA (average) Color: Black Material: Plastic Working Temperature: -20°C to +60℃ Working Humidity: Less than 90% of the installation location 1.The concealed installation of the host weaken the alarm sound. 2. is best not to install the host in a confined space surrounded by metal materials, because metal has a large shielding effect on the wireless signal and affects the remote control distance. Package Contents: 1 x Alarm 1 x Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.