Function: induction vibration host alarm, 3 kinds of car search ringtones, dump SOS call Principle: Vibration sensor senses vibration, wireless 433 frequency remote control Wireless remote control distance: 10~25 meters, 100 meters in open area Alarm sound: 113dB Battery: Three AAA batteries of the host, one remote control 12V27A Scope of application: bicycles, electric vehicles, motorcycles, household doors and windows, etc., induced vibrations to trigger alarms and anti-theft Specifications: Material: ABS Colour: Black Alarm Size: 4295mm Remote Control Size: 3361mm Package Size: about 1139629mm Quantity: 1 Set Description: Suitable for bicycles, electric vehicles, motorcycles, household doors and windows, etc. to trigger the alarm and anti-theft 7 levels of adjustable sensitivity, from lightly touching the screen to triggering only after pushing and beating, suitable for various occasions 113dB loud alarm sound, effectively deter thieves, 6 kinds of bells, easy to find your vehicle IP55 waterproof material shell, waterproof and sturdy, more suitable for outdoor use Two installation methods, double-sided sticking or strapping, convenient for anti-theft installation of various vehicles and batteries The Package Includes: 1Alarm Host 1Remote Control 1Screwdriver 1Disassembly Piece 2Tie 2Double-sided Tape 1*Instruction