Bicycle Bike Safety Alarm Warning Annunciator Lock

Traditional chains, padlocks and U Locks only do half a job and can be pretty easily removed by those who know how, but even the sight of this alarm will have even the most determined of thieves thinking twice. If your bike is moved, the alarm will spring into action . No thief will want to hang around. I'm sure so powerful function must can protect your bicycle effectively.

Features:

Only the user can unlock
Adopt micro- computer technique, have High-Middle-Lower sensitivity choose
Quiver trigged, security and sensitivity
Low power consumption to allow the battery a long life.
Easy to installation and DIY

Waterproof: attach permanently to your bike without worrying about having to remove it in bad weather
Material: Sturdy black plastic - no metal parts to rust
Fit for: Bicycle
Power supply: 1 x 9V battery
Dynamic current < 100mA