Description: This product can be used on windows and doors, safes, wall, Cabinet, electric gate, electric, machinery and equipment, (cars, motorcycles, electric vehicles) indoor, outdoor, and so on all kinds of goods. Once a minor vibration, impact, touching, that is 120 decibels high-pitched siren, to alarm the deterrent effect. for carrying travel away from home. Usage: 1. Remove the battery , distinguish the battery positive and negative polarity, laminated into the 9V battery into battery cover. 2. Switch to the "ON" led flashes, 10-15 seconds put on alert. 3. When the alarm is subjected to vibration, shock, move, then generate a 120 decibel alarm sound, the alarm time will last for about 20 seconds. 4. When the warning sound significantly reducing, please replace the battery, take out the battery when you will not use it for a long time. Specification: Material: PP Plastic Size: 100*55*22mm/3.13*2.16*0.86 inch Package Includes: 1 Piece Vibration Detection Alarm(6 Pack) : 1. If this product appears innormal or automatic, please check the battery power supply or installation location. 2. When the alarm sounds become significantly low, please replace the battery immediately, if the alarm will not use for a long time, please remove the batteries. 3. Some batches may not have bid ON and OFF.