1. Low voltage protection ( that the battery is not lower than 11.7V-12.1V to that the car can start normally); 2. Smart power off (the smart power supply automatically shut down when the battery detects 11.7V-12.1V, which better protects the car's battery from starting normally); 3. Ultra-low standby current of 6 mA, worry-free parking. 4. The sensitivity of the vibration sensor can be adjusted, and it can be adjusted according to the actual parking environment, such as basically parked on the side of the road, the sensitivity can be lowered a bit 5. Parking monitoring function, when the car body is in the off state, if the vehicle body is vibrated, the recorder automatically turn on and record for 2 minutes and then shut down. The intelligent power supply makes your 360 panoramic recorder more intelligent and perfect. The internal use of piezoelectric ceramics and spring weight structure to detect vibration signals, and through LM358 and other operational amplifiers to amplify and output control signals, has the advantages of low cost, high sensitivity, stable and reliable work, large vibration detection adjustable range, it is widely used When it comes to anti-theft systems for automobiles and motorcycles, 80% of current vehicle alarms use this type of sensor.. The sensor can also be combined with a single-chip microcomputer, wireless transmitter module, wired siren, etc. Colour:black Material:ABS Package Contents: 2 x Anti Theft Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.