1 Channel 5V Relay Module with HR202 Humidity Sensor (Automatic Humidity Control Module)

The 1 Channel 5V Relay Module with HR202 Humidity Sensor is an automatic humidity control module designed to switch electrical loads based on ambient humidity levels. It combines an HR202 resistive humidity sensor, an onboard comparator circuit, and a single-channel relay to automatically control devices such as humidifiers, dehumidifiers, exhaust fans, and ventilation systems. Operating from a 5V DC supply, the module features an adjustable trigger threshold for customized humidity control and can be easily interfaced with embedded systems or used as a standalone humidity controller.

Key Features -

• Integrated HR202 resistive humidity sensor

• Single-channel 5V relay output

• Automatic humidity-based switching

• Adjustable humidity trigger threshold

• Onboard comparator control circuit

• LED power and relay status indicators

• Compact PCB module

• Easy wiring and installation

• Suitable for automatic environmental control

• Reliable relay switching performance

Specifications -

• Product type - Humidity Control Relay Module

• Operating voltage - 5V DC

• Humidity sensor - HR202 Resistive Humidity Sensor

• Output type - Relay Switching

• Trigger mode - Adjustable Humidity Threshold

• Relay type - Electromechanical Relay

• AC switching capacity - Up to 250V AC, 10A Maximum

• DC switching capacity - Up to 30V DC, 10A Maximum

• Response type - Automatic Humidity Control

• Mounting type - PCB Module

• Operating temperature - 0C to 70C

Applications -

• Humidifier control

• Dehumidifier control

• Ventilation systems

• Greenhouse automation

• Environmental monitoring

• Industrial humidity control

• Smart home automation

• DIY electronics projects