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HR202 Humidity Detection Sensor Module

This module uses a high-quality HR202 humidity sensor. The comparator outputs a clear and stable signal with a driving ability of more than 15mA.

The humidity sensor module responds to the environmental humidity. By adjusting the potentiometer, you can set a threshold for the humidity level (i.e. the humidity control). For example, if you want to maintain the ambient humidity at 60%, you can turn the module until the green light is on and the humidity is within the range. When the humidity is above the threshold, the DO output is high and the green light is off.

The DO output can be directly connected to a microcontroller to detect the high and low levels of the signal, which indicate the changes in the humidity of the environment.

The DO output can also drive a relay module to form a humidity switch, which can control other devices to operate in a suitable environment.

The AO analog output of the module can be connected to an AD converter to get a more precise numerical value of the ambient humidity. The module has 3mm screw holes for easy installation.