LM393 Chip Wet Sensitive Control Switch HR 202 Humidity Sensor Module for Arduino - SR126

• Operating voltage 3.3V-5V
• Using high-quality HR202 humidity sensor.
• The comparator output signal is clean.
• Good waveform.

Description:

It can detect the humidity of the surrounding environment. With adjustable sensitivity (shown in blue digital potentiometer adjustment). It comes with fixed bolt hole for easy installation. Power LED (red) and the digital switch output indicator using LM393 comparator chip, stable.

Specification:

• Operating voltage 3.3V-5V

Features:

• Using high-quality HR202 humidity sensor.
• The comparator output signal is clean.
• Good waveform.
• Driving ability, more than 15mA.

Module interface specification (4-wire):

• VCC external 3.3V-5V
• GND External GND
• DO small plate switch digital output interfaces (0 and 1)
• AO analog output interfaces small plates

Module for use:

• Humidity resistance module most sensitive to environmental humidity is generally used to detect ambient humidity.
• Modules at ambient humidity reach the set threshold, DO port output high, when the external ambient humidity exceeds the set threshold, the module D0 output low;
• digital outputs D0 small plates can be directly connected with the microcontroller through the microcontroller to detect high and low, thereby detecting the humidity changes;
• small plates digital output DO OUR relay module can directly drive, which can be composed of a wet control switch;
• small plates analog output AO can shop AD module connected through the AD converter, you can get more accurate humidity values;

Modules Test Description:

• By using our 51 development board and humidity resistance module test
• Wiring:
• Module development board connected to VCC VCC
• Module development board GND GND with
• Connect the VCC and GND, module power indicator lights
• Place the module on the desktop, adjust the blue board potentiometer until the on-board switch indicator light, and then a little pullback and let light switch off and think of ways to make the environment humidity increases, the module switch indicator will light . If the ambient humidity is low, the switch indicator will back off state. This phenomenon shows that the ambient humidity can trigger module, so that the switch indicator lights.

Package Included:

1 x LM393 Chip Wet Sensitive Control Switch HR 202 Humidity Sensor Module.