Colour: Black Size: 113*96*29mm Material: ABS Weight: 128g Function: induction vibration host alarm, remote control wireless control, 3 kinds of car search ringtones, dumping SOS prompt Principle: Vibration sensor senses vibration Frequency: Wireless 433 frequency Battery: three AA batteries for the host (normal 3~4 months battery life), one remote control 12V27A (more than one year) Wireless remote control distance: 10~25 meters, open 80~100 meters Alarm sound: 113dB Host waterproof grade: IP65 Product use range: bicycles, electric vehicles, motorcycles, household doors and windows, etc. describe: Using three-dimensional displacement sensors and special algorithms, it can more accurately identify theft and reduce noise interference. There are two installation methods, double-sided stickers or cable ties, which are convenient for anti-theft installation of various vehicles and batteries. It is best not to install the host in a closed space surrounded by metal, which will greatly affect the wireless signal. Shielding affects the remote control distance. feature: Control distance: Remote control operation distance: 0-66 feet (20 meters). SOS function: Turn on the SOS help function, and automatically send out a help sound when encountering a riding accident, giving you multiple protections. Volume: 113dB high volume, the installation of hidden parts can also effectively deter thieves!