Sample is free, small order accept.

Feature
1) Can be used for: motorcycle, bike, etc;
2) 105-110 dB alarm sound;
3) Auto-alarming system & locking system;
4) Can be used alarmed or unalarmed states;
5) Automatic alarm reset;
6) Shake,shock,move or vibrate sensor;
7) Resistant corrosion, resistant bad weather, resistant physical destory, waterproof;