Features1Easy Operation: Electric bike alarm with 2 remote control key to open and close the vehicle, allow you can one key to start, do not have to operate through the car key. 2Reminding Function: When you forget the parking location, short press remote control to beep 15 times to prompt position, the sensitivity and other parameters can be adjusted. 3Prevent Theft: When electric bicycle is pushed in the alert state, the alarm will beep 5 times and if be pushed again, it will beep 15 times, which plays a very good anti theft effect. 4Release Key: You just need to short press to release when the alarm beeps or in the state of electric start, to turn off the power supply, which is convenient for you to use. 5Adjustable Sensitivity: Long press the key, the alarm will beep 15 times representing sensitivity level, the higher the series is the more sensitive, release the key in the required level.SpecificationItem Type: Electric Bike AlarmMaterial: PlasticKey Battery: 1 x CR2032 Button Battery 210mAh(Included) 2 keysPower Supply Voltage Range: 48V-64VAlarm:Working Voltage: 48-64V Operating Current: 80m / 262.5ft(open area)Vibration Sensitivity Level: 5 level adjustmentPackage List1 x Host2 x Key(Included)1 x Rubber Pad