When the lock is vibrated twice within 5 seconds, the alarm will. sound The SIREN alarm of this lock will ensure TOP class security for your Household or Bike.Operating Instructions: Insert Key, turn in a clockwise direction & remove shackle Replace shackle into a lock with groove towards the key port.The lock will "beep", at this point remove the key & the alarm will set after 15 seconds.When the lock is vibrated twice within 5 seconds, the alarm will sound.The 5-second delay will allow the clock to be opened by key without sounding.The Alarm sounds in 10 seconds interval; the alarm will keep sounding with constant movement or vibration Once stopped the alarm will reset after 35 seconds.

Product details of Security Alarm Lock - Black

• Combines locking function with alarming function.
• Built-in movement triggered alarm
• It can emit a loud sound when the lock is hit or shaken.
• Adopts MCU core procedures, high-tech integrated circuit and the digital sensor chip.
• Can be set to two states: mechanical lock and alarm.
• Low false alarm rate.
• Low power consumption.
• Can be used on the door, window, bicycle, container, motorbike, pull gate, garden, etc.
• Corrosion resistant, waterproof and durable to use.
• Powered by six button batteries.
• Supplied with three keys, convenient to use.