Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	5V DC
Sensor Type	NTC Thermistor
Relay Contact Rating	10A 250VAC / 10A 30VDC
Detection Range	-55°C to +125°C
Trigger Mode	Adjustable via Potentiometer
Output Signal	Digital Switch (TTL)
PCB Dimensions	42mm x 26mm x 14mm
Mounting Hole Diameter	3.5mm
Indicator LEDs	Power and Relay Status
Compatibility	Arduino, Raspberry Pi, PLC

6 reviews

Anonymous

Mar 21, 2026

Rating: 5/5

Perfect for my greenhouse project

This module worked exactly as described. The temperature threshold is easy to adjust with the blue potentiometer, and the relay clicks reliably when the set point is reached. Great value for the price.

Anonymous

Mar 19, 2026

Rating: 5/5

Great for learning embedded systems

Bought this for a university project. It's very sensitive and responds quickly to temperature changes. The 2-in-1 design saves space on my breadboard setup.

Anonymous

Mar 19, 2026

Rating: 4/5

Solid performer

Works well for triggering alarms when temperatures get too high. The only minor issue is that the screw terminals are a bit tight, but that ensures a secure connection.

Anonymous

Mar 06, 2026

Rating: 5/5

Exceeded expectations

Very compact and efficient. I used it to control a small pump based on water temperature. The adjustment range is wide enough for most common applications.

Anonymous

Mar 06, 2026

Rating: 5/5

Reliable switching action

I've tested this with a heating element and it handles the load without issues. The LED indicators are bright enough to see status at a glance. Highly recommended for DIY automation.

Anonymous

Mar 03, 2026

Rating: 4/5

Good quality, clear instructions needed

The hardware is solid and the soldering is clean. However, I had to look up a tutorial to understand the pinout clearly. Once connected to my Arduino, it functioned flawlessly for controlling a cooling fan.

5 FAQ

Q: What is the response time of the sensor?

A: The NTC thermistor typically responds within a few seconds depending on the medium (air vs liquid) and the mass of the object being measured.

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

A: Yes, the relay supports up to 10A at 30VDC, so it can easily switch a standard 12V DC fan on and off based on the temperature setting.

Q: How do I change the trigger temperature?

A: There is a blue potentiometer on the board. Use a small screwdriver to rotate it clockwise or counter-clockwise while monitoring the LED to set your desired trigger point.

Q: Is the thermistor waterproof?

A: The thermistor probe itself has some protection, but it is not fully waterproof for submersion. We recommend using a waterproof casing if using it in humid or wet environments.

Q: Does this come with jumper wires?

A: The package includes the module and the sensor probe, but jumper wires are not included. You will need to provide your own Dupont wires for connection.

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