HR202 Humidity Resistance Sensor Module LM393 Chip for Arduino MCU
- Can detect the humidity of the surrounding environment
- Adjustable sensitivity adjust the digital potentiometer (shown in blue)
- Operating voltage 3.3V-5V
- Output in the form:
a. voltage output
b. digital switching outputs ( 0 and 1 )
- Fixed bolt hole for easy installation
- Small plates PCB size: 3cm * 1.6cm
- Power indicator (red) and digital switching output indicator (green )
- Using LM393 comparator chip, stable
Module interface specification ( 4 -wire )
- VCC external 3.3V-5V
- GND external GND
- DO small plate switch digital output interface ( 0 and 1)
- AO - board analog output interface
Using instruction
- The hygristor module is most sensitive to the ambient humidity, generally used to detect the humidity of the surrounding environment.
- When the environmental humidity reach the threshold value is set, DO port output high
- when the humidity exceeds the threshold value is set when the external environment, the module D0 output is low
- Small plates digital outputs D0 can be directly connected with the microcontroller
- Microcontroller to detect high and low, and to detect changes in environmental humidity
- Board digital output DO OUR relay module can directly drive, which can form a wet control switch
- Small plates analog output AO OUR AD module connected through the AD converter, you can get a more accurate value of the environment humidity
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