Product details of Security Alarm Lock - Black home & other place 100% Brand new and highquality! Material: zinc alloy Combines locking function with alarming function. Built-in movement triggered alarm, which can emit loud soundwhen the lock is hit or shaken. Adopts MCU core procedures, high-tech integrated circuit anddigital sensor chip. Can be set to two states: mechanical lock and alarm. Low false alarm rate. Low power consumption. Corrosion resistant, waterproof and durable to use. Supplied with three keys, convenient to use. Alarm decibel: 110dB Power supplied by: 6 *LR44/A76 button batteries Lock size: 7 * 3.3 * 9.8cm/ 2.7 * 1.3 * 3.8in 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. Note: When you place the shackle with groove into lock near key port, then the lock comes into alarming state. When the shackle with groove is placed away from key port, the lock is just in the mechanical lock state. Package included: 1 x Alarm lock 3 x Keys 6 x Battery