Ultrasonic Remote Control Bicycle Anti-lost Alarm - Black - 3Y94403012

Features:
1 Easy to install and use, waterproof alarm clock can be used in rainy weather, more durable and practical
2 How to use: Press the red A button to set the defense and beep once; press the gray B button to cancel the anti-theft, and it will beep twice.
Ultra-sound, easy to anti-theft; easy to operate, remote control distance of up to 10 meters, open block will be better, sometimes up to 30 meters.
3 Vibration sensor system, when the bicycle is shaking or vibrating, the alarm will release the super alarm for about 20 seconds, a good safety bicycle anti-theft tool
Leave the bicycle for a short time, no need to trouble to lock up
9 V battery (without battery), when the alarm is weaker than the normal alarm, you should replace the battery, if not for a long time, please remove the battery.