Length dimensions: length width 10mm X 45mm X 15mm high Second, the main chip: LM393, vibration probes Third, the working voltage: DC 3-5V features: 1, a signal output indication; 2, with analog and TTL level signal output signal output; 3, the output valid signal is high, the light goes out; 4, sensitivity adjustable Fine Tuning ; 5, wide detection range vibration, no direction; 6, with mounting holes, firmware installation flexible and convenient. Applications: can be used in anti-theft devices, electronic locks, mechanical equipment vibration detection, detection range bullseye count vibration testing occasions;