LM393 Indicator Light 1 Channel Digital Humidity Sensor Relay Module

The LM393 Indicator Light 1 Channel Digital Humidity Sensor Relay Module is a versatile and highly reliable module used for automation systems requiring humidity or moisture-based control. Equipped with an LM393 comparator, adjustable potentiometer, humidity detection probe, and relay output, this module automatically activates connected devices such as fans, pumps, humidifiers, and alarms.

It is widely used in smart agriculture, DIY automation, home humidity control, and Arduino-based monitoring systems. The onboard LEDs display power and digital switching status, making it ideal for both beginners and professional users.

This module works perfectly with:

• Arduino Boards
  👉 https://electroway.org/product-category/arduino-and-accessories/arduino-boards/

• NodeMCU for IoT humidity control
  👉 https://electroway.org/product-category/iot-and-smart-solutions/iot-modules/nodemcu/

• Raspberry Pi (with GPIO relay control)
  👉 https://electroway.org/product-category/electronic-accessories/mounts-and-cases/raspberry-pi-mounts-and-cases/

Explore more Electronic Components:
👉 https://electroway.org/product-category/electronics-components/

✔ Technical Specifications

✔ Features

• Automatic humidity/moisture detection

• Adjustable sensitivity

• High-quality LM393 comparator ensures fast response

• Relay output to directly control AC/DC loads

• Power & status indicator LEDs

• Suitable for automation and IoT projects

✔ Applications & Uses

This module is widely used in:

• Smart agriculture irrigation systems

• Soil moisture & humidity monitoring

• Automatic greenhouse control

• Smart home humidity management

• Industrial moisture detection systems

• Arduino & IoT projects

• Automatic water pumps

• Humidifier/Dehumidifier control

• Plant watering automation

Check related modules:

• Tools & Accessories: https://electroway.org/product-category/tools-and-accessories/

• IC’s: https://electroway.org/product-category/ics/

✔ Precautions

• Do not expose the relay to high moisture directly.

• Always isolate high-voltage loads for safety.

• Adjust the potentiometer slowly for accurate trigger levels.

• Use proper Power Supply to avoid false triggering.
  👉 https://electroway.org/product-category/raspberry-pi-and-accessories/accessories-raspberry-pi-and-accessories/power-supplies-accessories-raspberry-pi-and-accessories/

• Avoid touching the PCB while connected to AC appliances.

✔ YouTube Tutorial Video

How to use LM393 Humidity/Moisture Relay Module with Arduino:
📌 Watch Video:https://www.youtube.com/shorts/CcKOxLtVJUQ

⭐ Product Summary

The LM393 Digital Humidity Sensor Relay Module is a powerful automation tool designed for humidity-based switching. With its adjustable sensitivity, relay output, and LM393 comparator, it is ideal for smart agriculture, automation, and IoT projects. It offers stable performance, clear indicator lights, and easy integration with Arduino and other controllers.