Magnetic field sensing is one of essential things we do in industry. Sensors like Hall Effect, KY035 Sensors etc. they all sense the magnetic field and can give both analog or digital output accordingly. This Reed Switch sensor module is different as it works only as a switch and not as a measuring device. It has a glass enclosure filled with inert gas called Rhodium in which there are two ferrous elastic reeds which will close contact when a magnetic field is applied to it. Normally they are in open condition and will detect the presence of magnetic field and close the contacts. It can be used in applications like washing machines, automatic door opening devices, Electromagnetic relays etc.
Reed Sensor Module Specifications
- Operating Voltage: 3.3V to 5V DC
- Output format: Digital switching output ( 0 and 1 )
- LEDs indicating output and power
- LM393 Comparator IC onboard
Using the Reed Switch sensor module with a microcontroller is very easy. Connect the Digital Output pin of the module to the Digital pin of Microcontroller. Connect VCC and GND pins to 5V and GND pins of Microcontroller. When the Reed Switch sensor detects the magnetic field, it closes the circuit and the digital pin of the module that is connected to the LM393 IC goes high.
