... ,FCC 5.stainless stee Electronic Bicycle/Motorcycle alarm lock with high secuirtyTechnology parameters:Product model: LT-U3021.Voltage1.5V, ... the lock under magnet and strong current. Vibration resistance: The lock can be normally work after shake( ... , Telephone network alarm, SMS notification, remote control. High practicability, durable. Electronic Bicycle/Motorcycle alarm lock with high secuirty