10A 220V Mini Digital Air Humidity Controller

What this device is

The 10A 220V Mini Digital Air Humidity Controller is a standalone automation controller that:

• Measures humidity (RH%)

• Automatically turns ON/OFF devices like:

  • Humidifier

  • Dehumidifier

  • Fan

   

It works like a thermostat, but for humidity

Core Concept (VERY IMPORTANT)

You set a target humidity range, for example:

• ON at 40% RH

• OFF at 60% RH

Then the controller:

• Turns ON device when humidity is low/high

• Turns OFF when desired level is reached

Fully automatic control

Key Specifications

10A (2200W max load)

Humidity Range: 1% 99% RH

Accuracy: 3% RH

Control Precision: 1% RH

Display: LED digital display

Sensor: External humidity probe

How it works

• Sensor measures humidity

• Controller compares with set value

• Relay switches device ON/OFF

Example:

• If humidity < set humidifier ON

• If humidity > set OFF

Same for dehumidification mode

Wiring (IMPORTANT)

Typical terminals:

• Power Input (L, N) 220V AC

• Relay Output (COM, NO/NC) Load (fan/humidifier)

• Srong>high voltage (220V) handle carefully

  Applications

  • Greenhouses

  • Incubators (egg hatching)

  • Room humidity control

  • Refrigerators / cold storage

  • Industrial humidity control

  • Storage rooms

   

  Very useful for automation without microcontroller

  Key Features

  • Fully automatic control

  • Built-in relay (no external relay needed)

  • Memory backup (retains settings after power loss)

  • Adjustable upper & lower limits

  • Easy button interface

   

  Important Notes (VERY IMPORTANT)

  1. High voltage device

  •  

  • Avoid touching terminals

   

  2. Not a sensor module

  This is NOT like Arduino sensors It is a complete controller system

  3. Limited accuracy

  • 3% RH typical Not for scientific use

  4. Relay limit

  • Max load 10A Don't connect heavy industrial loads directly

  Controller vs Sensor Module

  When to use this

  Use this if you want:

  Direct control of AC devices

When NOT to use

Avoid if:

• You want IoT/data logging

• You need high precision

• You are building Arduino projects

Final Understanding

This device = automatic humidity switch (like thermostat) Best for direct control s