This model works by power-on operation: after wiring
0–120dB adjustable volume controlled by buttons
and other items that need theft deterrence
Charge the unit before use and install it in an open area for better motion detection
LED strobe warning light with a red shade
YASONG 2 Pack Bike Alarm, 113dB Wireless Anti-Theft Vibration Alarm, 50m Remote, IP55, 7 Sensitivity Levels Motion Sensor & Detector Alarm Siren This model works by power-onThe YASONG 2 Pack bike alarm is a wireless anti theft vibration alarm designed for bicycles, motorcycles, electric bikes, scooters, trailers, luggage, and other vehicles that need extra theft deterrence. This model uses a vibration triggered alarm. When armed, the alarm gives a short warning after touch or collision, then sounds a longer alarm if movement happens again within 12 seconds. 113dB loud alarm shown in the product title for theft deterrence