A. It is made of materials and is durable and easy to use. B. Press the anti - theft button, and the anti - theft device will enter the anti - theft state, locking the engine to prevent it from running. C. Press the unlock button, and the anti - theft device will disable its anti - theft function. D. Click the car - finding button in the parking lot to find your vehicle more conveniently. E. It can realize keyless start of the vehicle. It has waterproof and dustproof functions and a relatively long service life. F. Voltage: Compatible with 48/60/72V. G. Decibel: Approximately 110 decibels. H. Remote control: Dual remote controls. I. Applicable vehicle models: Suitable for electric bicycles/step - through motorcycles, tricycles, and electric bicycles equipped with an alarm and with a voltage between 48 - 72V. J. Material: Plastic. K. Color: Black. L. Package contents: - 1 alarm system - 2 remote controls - 1 wiring harness Only the above package contents are included, and no other products are included. M. Note: Light and different displays may cause the color of the item to vary slightly from the actual object. The allowable measurement error is +/- 1 - 3 cm.