1. 2 IN 1 DESIGN This innovative bike accessory combines bike alarm and bike bell, ing effective audible alerts. With 3 volume levels and an anti-theft alarm, this easy-install, rechargeable bell is a great option for your e-bike adventures. As you ride, it's helpful to have a bell that you can use to let fellow riders know you're approaching whether navigating a busy track or quiet campground. 2. D 3 LEVELS VOLUMES ADJUSTABLE: bike alarm has added a 3 levels volumes control function,maximum alarm volume is 115db. Adjust the volume of the bike alarm according to the needs of different times and occasions. Doors and windows can be equipped with this security alarms to effectively repel thieves and illegal intrusions and ensure the of family. Of course, it can also be installed on bicycles, scooter and motorcycles if necessary. 3. ALARM SYSTEM ANTI-THEFT PRODUCT: The process of installing on bicycles and motorcycles is very convenient, and it is r than wires lock and U-locks. With good sensitivity,host can be sounded with a slight touch and the response is very fast. Park your bike on the road and install this bicycle alarm so don't have to worry about your bike being stolen because it will sound a huge alarm when someone touches it. Car thieves are desperate too, so install it outside absolutely out of reach. 4. SENSITIVITY ADJUSTMENT & CAR SEARCH FUNCTION: This car anti-theft motorcycle alarm can be changed to 3 kinds of sensitivity. If the sensitivity is high, tap the bicycle alarm to sound the alarm. You can adjust the alarm sensitivity as needed to prevent accidental touches. Please refer to the English Manual for the operation method. Use the ringtone button on the remote to find out where the car is parked, saving you time when you're looking for a car in a crowded parking lot. 5. BATTERY INFORMATION & BATTERY REPLACEMENT METHOD: Bicycle alarm host inside of the bicycle anti-theft alarm is a 400mAh (3.7V) battery, please use original 2A USB charging cable to connect the adapter to charge the bicycle alarm, generally it can be fully charged in 3 hours . Wireless remote : 12V/27A, the remote control distance is about 30-50M. If the remote can't control the host, please replace the battery and then re-match the alarm panel with the remote. 6. IPX5 WATERPROOF & BRACKET INSTALLATION: The airtightness of the bicycle alarm is works very well, it will not affect its effectiveness even in heavy rain, especially suitable for protecting the of the car in rain and snow weather. Main unit size 583515mm. The light and small main unit can be installed in any position of the car with a cable tie. Since the mounting bracket and the body are separated, there is no need to cut the cable tie when charging or replacing the battery.