This Reed switch module uses a small device called a reed switch.
When the device is exposed to a magnetic field, the two ferrous materials inside the switch meet and the switch closes. When the magnetic field is removed the switch opens.
The operating mode :
- When exposed to a magnetic field the DO output is high
- Power supply: 3.3-5V
- Contact type: SPST-NO (normally open)
- Temperature of use: -20ºC to + 80ºC
- Type of output: Digital (1 - 0)
- Dimensions of PCB: 32 x 14 mm