Description

MH Sensor Series

This is an easy to use sensor module you can use to sense presence of water and rain condition, suitable for many weather related IoT projects. The sensor comes with a electrode pad you can use to sense water. The rain water affects its electrical conductivity, changing the resistance of electrode pad and therefore changing the output signal to your system.

Note : this sensor can works with both analog and digital mode. You can connect the analog output (AO) pin to Arduino to read the level of rain, or digital output (DO) to sense the presence of water digitally. Adjust the potentiometer (a.k.a. trimmer) to set the digital output (DO) sensitivity.

Specific Features

• Comes with electrode pad for sensing the rain condition
• The water content affect the electrical resistance of the electrode pad
• If water is present on the pad, it will conduct electricity and lower the reading

Common Features

• Logical IC : LM393
• Operating voltage : 3.3 – 5V
• Output current : ?15 mA
• Adjustable sensitivity via potentiometer
• Comes with LED indicators for POWER and OUTPUT
• Fixed bolt holes for easy installation

Wiring

Files & Documentation

• Tutorial : How to Use a Rain Sensor – CreateArduino
• Tutorial with code : Rain Detection System using Arduino and Rain Sensor – CircuitDigest
• Tutorial with demo : Interfacing Rain Sensor with Arduino – electroSome