If the module does not vibrate- the vibration switch was closed on state- output of low output- the green indicator light. The product vibrates- vibration switch momentary disconnect- output is driven high- the green light does not shine. The output can be directly connected with the microcontroller- which to detect high and low level- so as to detect whether the environment exist vibration- play a role in the alarm.
Using SW-420 normally closed type vibration sensor Comparator output- clean signal- good waveform- strong driving ability- >15mA Working voltage 3.3V ~ 5V Output format: digital switching output (0 and 1) Using a wide voltage LM393 comparator With bolt holes for easy installation
1 x SW-420 Vibration Sensor Module