Lock & Unlock Mode::This smart electronic lock can be locked and unlocked by password or remote control. It is ery conenient without any key. The remote control can control multiple locks or similar remote alarms at the same time. The lock can learnup to eight remote controls. Timely Alarm::The electronic lock's alarm is ery sensitie, and an alarm can be triggered immediately when the lock is moed or moed. When the wire rope is cut off or the locking screw is remoed, an alarm will be issued immediately. If you enter the wrongpassword three times, the alarm will be actiated and the alarm sound will reach 115 decibels or more. Waterproof & Dustproof::waterproof and dust-proof grade, suitable for indoor and outdoor use. It can be used normally in the temperature range of - 10 +60.With this lock, no matter how bad the weather is outside, it can protect your bike or motorcyclesafely and neer be stolen. Best Gift::This bicycle lock alarm with economical price and durable quality, becomes must-hae product in your family. It's an ideal gift for your loed ones