As this is called a ‘Vibration Sensor’ it’s fairly obvious that it must detect vibration, but it can actually do more. along with sensing vibrations of the kind might be caused by a sudden thud from an object hitting the surface this device is placed on, it can also detect when it has been tilted, and it can even detect when it has been dropped.

Product size: 36x36x 9mm (1.42x 1.42x 0.35in.)
Executive standard: Q/QLML012-2016
Working temperature: -10° C~ 50° C
Working temperature: 0~95% RH, no condensation
Material: PVC fireproof material