TEMPORARY ALARM: This electronic bicycle security lock is highly sensitive. An alarm will trigger immediately if the lock is moved or tampered with. Cutting the cable or removing the lock screw will also activate the alarm. Entering the wrong password three times will trigger the alarm, producing a sound of 115 decibels or more. LOCK AND UNLOCK: This smart electronic lock can be secured and released using a password or remote control, offering keyless convenience. The remote control can manage multiple similar remote locks or alarms simultaneously. The lock can learn up to eight remote controls. FOUR-DIGIT PASSWORD: The bicycle security lock supports a four-digit password combination, offering up to 256 password combinations. It's very simple and convenient to use. Remember your password after setting it, or the lock will automatically alarm after three incorrect attempts. IP55 WATERPROOF & DUSTPROOF: This IP55 waterproof and dustproof bicycle alarm is suitable for both indoor and outdoor use. It operates normally within a temperature range of -10 to 60°C. With this lock, your bicycle or motorcycle is protected from theft, regardless of the weather conditions.