The product has the ability to vibrate inductive alarm, and keep the alarm for 20 seconds after being triggered, super loud.With low power consumption design, the product can last long.Made of high quality ABS, it is eco-friendly and waterproof. It also has high sensitivity due to the high-sensitivity anti-cloth probe. It adopts microcomputer control, the sensitivity can be adjusted in three levels of high, middle and low, with high reliability.The length of the product is 9.5cm, the width is 6cm, the height is 3.5cm.It is perfect to protect your shop, office, home, car, house or anywhere requiring protection. The remote control and the alarm terminal can effectively sense more than 10 meters, and the open area can reach 30 meters.Item Name: Bicycle Alarm LockMaterial: ABSBatteries: 1 x 9V Battery (Not Included)Operating Temperature: - 15 Degrees Celsius to 75 Degrees CelsiusWorking Current: Less than 100mAStorage Temperature: - 40 Degrees Celsius to 85 Degrees CelsiusColor: BlackEnvironment Humidity: 5%-98%Sound: 105dbSize Details: 9.5cm x 6cm x 3.5cm/3.74" x 2.36" x 1.38" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Usage Method: Press the red A button to arm the defense, and it will "Du" once.Press the gray B button to cancel the anti-theft, and it will "Du" twice.Package Includes:1 x Bicycle Alarm Lock(Battery Not Included)1 x Remote Control4 x Screws2 x Nuts1 x Anti-lost Buckle