Features: Extremely Sensitive Bicycle Alarm: The vibration triggered alarm accurately identifies theft attempts, 113dB volume shocks thieves like a lion roar and can effectively scare them away. The alarm system can automatically drive away strangers who sit in your bike without permission, enhancing your bike's protection. Creative Bike Alarm with Remote: Simply press button for quick unlocking the arming status to your bike. Remote control range up to 164FT,help you locate your bike effortlessly.3 kinds of car search ringtones are available to meet various needs. Easy installation & Waterproof : The alarm can be easily hidden on your bike, making it difficult for potential thieves to detect. The bicycle alarm offers flexible installation options, allowing you to secure it to various parts of your bike. Water resistant rated to IP65, suitable for outdoor use. SOS Emergency Alarm: This bicycle burglar alarm also has SOS emergency alarm. Just turn on the SOS help function, it will automatically call loudly for help if the tilt is more than 45 degrees. Multi-Purpose Anti Theft Alarm: This excellent sensitivity vibration triggered alarm is suitable for bike, motorcycles, electric bicycles, motorbikes, scooters, trailers and luggage, and so forth. Paking list 1* Alarm 1* Remote Control 2* Cable Tie 2* Double-sided Sticker 1* User Manual Features: IP65 Waterproof Durable PC case SOS Functions Battery Low Indicate 3 Ringtones for Your Choice Apply and Setting 1. Press the Arm key on the remote control and the alarm "Do..Le.. Mi" sounds, after 5 seconds, "Bi" sounds and enters alarm mode.The vibrating alarm to help you chase away theft and strangers Expandable If you need an additional remote control or alarm for a family member or just as a replacement. Available via From store. How to pair? Press and hold the fourth button of the original remote until you hear the sound "Bi", then press the first button of the additional remote control once. The alarm clock goes off "BI ... Bi ".Done.