The 5V Humidity Sensor Relay Module is a compact control board that combines a moisture-sensing input with an on-board relay output. When the detected humidity crosses the threshold you set, the relay switches the connected load on or off automatically. It is a popular building block for home gardeners, hobbyists, and makers who want simple, hands-off control of pumps, fans, lamps, or small irrigation devices in DIY and automation projects.
Key features
- Runs on a standard 5V supply, easy to power from common boards and adapters.
- Built-in relay output for switching an external device on or off.
- Humidity-based triggering with an adjustable threshold for flexible control.
- Compact module that fits neatly into project enclosures and breadboards.
- Works well alongside microcontrollers and simple control setups.
Typical uses
- Automating a small water pump for plant watering when soil or air gets dry.
- Switching a fan or ventilation device based on humidity.
- Greenhouse, balcony, and indoor-garden automation experiments.
- Learning and prototyping electronics, sensors, and relay control.
How to choose / tips
- Confirm your controller or power source provides a clean 5V supply.
- Check that the device you want to switch matches the relay's handling capacity before wiring.
- Calibrate the humidity threshold to your environment for reliable triggering.
- Mount the module away from direct water splash for longer service life.
Why tna W rna
At tna W rna we focus on reliable sourcing, careful quality checks, and fast delivery across Egypt, with cash on delivery available. Order with confidence and get the parts your project needs without the hassle.
