Pinph Heavy Duty motorcycle/bike lock anti theft disc lock for motorcycle motor bike lock with with alarm systerm （Black）

Steps to use:One Press the lock button to block the disk brake and you will hear a beep. When the lock is shaken, the lock will give three beeps in case of accident. When it vibrates again, the Silver Knight will issue a shrimp alert for 10-12 seconds. He maintained the alarm with continuous vibration2. Silver Knight takes 3-5 seconds to unlock the lock. If the key does not match, he will send out an alarm. Right click to open the lock and the alarm will stop immediately.Battery replacementWhen the lock no longer emits a sharp alarm, it will emit a "Ge" sound, which means that the battery will run out and you must replace it. Please use the micro key provided by us, turn the four corner screw to the bottom, take out the cartridge case, replace the battery, pay attention to "+" and "- cathode".