Generic HR202 Humidity Sensitive Switch Relay Module - Adjustable Threshold, 250V AC Relay
This humidity-sensitive switch module integrates an HR202 humidity sensor with a comparator and a 10A relay, providing direct control of AC/DC loads based on ambient humidity levels. It is designed for 5V logic systems and features an adjustable detection threshold via onboard potentiometer.
Features
- Integrated HR202 humidity sensor with 20% to 85% RH operating range
- Onboard 10A relay for switching up to 250V AC or 30V DC loads
- Adjustable humidity detection threshold via potentiometer
- 5V trigger voltage compatible with Arduino, ESP32, and other microcontrollers
- Compact PCB design with screw terminals for robust load connections
Out of stock
This module functions as a standalone humidity-activated switch, utilizing the resistive HR202 humidity sensor. Changes in humidity alter the sensor’s resistance, which is compared against a user-set threshold by an onboard comparator circuit. When the threshold is exceeded, the comparator triggers a relay, enabling or disabling the connected load.
The module is designed for direct integration into control systems, requiring only a 5V DC supply for logic and the relay coil. The screw terminal blocks facilitate safe and secure connections to high-power AC or DC circuits, making it suitable for environmental control applications without requiring a dedicated microcontroller for basic on/off operation.
Additional Information
| Weight | 0.016 kg |
|---|---|
| Dimensions | 6.4 × 2.6 cm |
