Mountain bike alarm lock

1: The lock is locked and the beep is heard. The lock has entered the alarm state. After 15 seconds, when the lock body or the car is vibrated again, it will sound three beeps, beep, beep Continuous vibration, continuous alarm, each alarm sound lasts 10 seconds.
2: Open the lock with the key to stop the alarm.
3: Suddenly stop when you hear the continuous sound of "crow, crow, crow, crow, ,,,,," within 10 seconds, and remind the owner to replace the battery. When replacing the battery, use the small wrench provided to unscrew the 4 screws and remove the upper cover to replace. Please pay attention to the "positive and negative" poles of the battery.