Description: It with TTL level signal output instructions Single signal output; the output valid signal is high level, indicator light extinguished The sensitivity can be adjusted (fine tuning) Widely Vibration detection range, non-directional With mounting holes, flexible and convenient to install, working voltage 3V-5V Size: approx. 10 x 30 x 20mm Specification: Applications: Can be used in anti-theft devices, electronic locks, vibration detection of mechanical equipment, shooting range target range and other test vibration test occasions Package Includes: 1 Piece Vibration Switch Detection Sensor Module Note: Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks !