Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Display Type	0.56 inch LED Digital Display
Temperature Range	-55°C to +125°C
Humidity Range	0% to 99% RH
Control Accuracy	±0.5°C / ±3% RH
Input Voltage	DC 5V - 12V
Relay Load Capacity	10A at 250VAC / 30VDC
Sensor Interface	Standard 3-pin Connector
PCB Dimensions	60mm x 40mm x 18mm
Operating Mode	Automatic Constant Control with Dual Output
Application Scope	Incubators, Terrariums, Greenhouses, Wine Cellars

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Essential for fermentation control

I use this to maintain a constant temperature for my home brewing fermentation chamber. It switches the cooling unit on and off precisely within the range I set. Highly recommended for any DIY climate control project.

Anonymous

Mar 24, 2026

Rating: 4/5

Great precision, minor wiring confusion

The sensor accuracy is spot on when compared to my calibrated thermometer. The only reason for 4 stars is that the wiring diagram on the back was a bit faint. Once I figured it out, it works flawlessly for my terrarium.

Anonymous

Mar 21, 2026

Rating: 5/5

Solved my humidity fluctuations

My plants were suffering from dry air spikes. This controller activates my humidifier exactly when needed. The hysteresis setting prevents rapid cycling, which is great for equipment longevity.

Anonymous

Mar 18, 2026

Rating: 4/5

Good value for money

As someone new to electronics, I found the buttons intuitive enough to program without reading the manual twice. It holds the settings well even after a power outage. Would buy again.

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect for my greenhouse setup

This module is incredibly easy to set up. The digital display is bright and readable even in direct sunlight. I've been using it to control a fan and a misting system in my small greenhouse, and the temperature stability has improved significantly.

Anonymous

Mar 01, 2026

Rating: 5/5

Compact and reliable

Small footprint fits perfectly inside my incubator box. The dual output feature allows me to control both heating and humidifying independently. No issues after three weeks of continuous operation.

5 FAQ

Q: Can I use this outdoors in the rain?

A: No, the PCB and display are not waterproof. While the sensor probe itself may have some resistance to moisture, the control board must be housed in a waterproof enclosure if used outdoors.

Q: What happens if the sensor cable gets disconnected?

A: The module will detect the open circuit and display an error code (usually 'EEE' or similar) while disabling the relay outputs to prevent unsafe operation.

Q: Can this module control a 12V DC cooling fan directly?

A: Yes, the relay supports DC loads up to 30V. You can connect a 12V DC fan directly to the output terminals as long as the current draw does not exceed 10A.

Q: Is there a way to adjust the temperature differential (hysteresis)?

A: Absolutely. By holding the 'Set' button for 3 seconds, you enter the parameter menu where you can adjust the hysteresis value from 0.1°C to 5.0°C to suit your specific application needs.

Q: Does the display show both temperature and humidity simultaneously?

A: The default mode shows temperature. You can press the 'Set' button briefly to toggle the display to show humidity, or configure it to cycle between both automatically depending on the firmware version.

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