specification: Color: silver Material: Stainless steel Alarm loudness: 110 DB siren (decibel) Alarm current: ‹50mA Quiescent current: ‹10mA Packing size: about 185 * 140 * 75MM how to use: Self-arming, just click in the key bucket and a beep will sound. After 5 seconds, the alarm will be activated. If the siren feels vibration or movement, it will beep as a warning, and if further movement is detected within 5 seconds, the siren will sound until the movement stops. After 20 seconds, if there is no further vibration, the alarm will stop for a few seconds and automatically re-arm. You can use the key to quickly disarm Package Contents: 1X alarm panel lock 1X Mini Wrench 3X lock key 1X reminder cable See more