Description: Features: brand new and high quality Uses a vibration detection system that consists of a bell and a contact spring. Characterized by high sensitivity, speed and high performance. It is widely used in car anti-theft and other security products. The internal piezoelectric ceramic sheet and the spring weight structure are used to detect the vibration signal. The amplifier signal is amplified by the lm358 and output control signals. Low cost, high sensitivity, stable and reliable operation, large adjustable range of vibration detection. In the anti-theft system for steam for cars and motorcycles, 80% of vehicle alarms use these sensors. The sensor uses smt chip technology inside, and the imported components are assembled. Can also be combined with a single chip microcomputer, wireless transmitter module, wired alarm, etc. It is used in combination and has a wide range of uses. Leading wire description: 1. the blue line is the signal output by the 358 op amplifier. If the signal is not vibrated, it is high (the io port must be pulled up), and if the signal is vibrated, it is low (signal to earth) . 2. red line power: + 12 v 3. the black line is the earth line Notice: If the output is connected at the high level, it needs to add a resistor of 100 ohms or less. If you want to drive the wireless transmitter module, you cannot replace the resistor. The red and black wires are connected to the positive and negative power input of the module. The number (alarm horn for dc) is preferably an external relay control to avoid major current damage to the internal components of the sensor (for reference). Specification: Color: Black Plug type: XH2.54-3P Output current: 100mA Sensitivity: -105dB Quiescent current: 6mA Rated working voltage: 12V Minimum operating voltage: 5V Material: ABS+Electronics Size: app. 59x40mm(2.32x1.57in) Trigger electrode number: unipolar trigger output Interface mode: XH2.54 or 2510 three-wire interfaces Trigger mode: negative ground trigger or 12V positive trigger Operating voltage: DC10V-16V Sensitivity: torsion can be debugged Indication mode: LED red light indication Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Anti-Theft Device with Cable(other accessories demo in the picture is not included.)