Reminder:   1.If you are worried about not knowing how to use the product, you can contact us and we will send you the document of the product manual by email. You can copy the text and translate it into the language you want.   2.One host can be equipped with three remote controls, and one remote control can also control two hosts.   3.We have plenty of stock,wholesalers can rest assured that orders   Anti-Theft Vibration Bicycle Alarm Remote Control 113dB Alarm Sensor Wireless Waterproof Bike Motorcycle Electric Security   Feature:   Working Environment: IP55 Waterproof   Control Distance: Remote operation distance of remote control: 0-66 feet (20 meters).   Volume:113dB high volume, hidden part installation can also effectively deter thieves   Touch sensitivity: There are seven levels from high to low, with seven tones do Le Mi FA So La Si sound effect prompt.   Volume: There are three levels: high, medium and low. The factory default is the highest sensitivity and maximum volume.   Multiple Uses: Bicycles, motorcycles, doors and windows, vibration alarm, more accurate identification of theft.   SOS function: Turn on the SOS help function, and the help prompt tone will be automatically sent out in case of riding accident to give you multiple guarantees.   Specifications:   1.7 Adjusting touch sensitivity   2.An alarm need 3 AAA alkaline batteries ( included ) standby for 6-10 months   3.A remote need a 12V/27A alkaline battery ( included ) standby for over 1 year   4.Wireless range: 10-20 meters   5.Working environment temperature: -20~60 degree, Working environment: <;80%   6.Storage temperature: -30~70 degree