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Home / Computer Hardware, Monitors & Peripherals / Thermistor Sensor Module with Relay Switch, Smart Car Accessory, Ambient Temperature Sensor Module

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Sensor Type NTC Thermistor
Operating Voltage DC 5V to 12V
Temperature Range -55°C to 125°C
Output Signal Digital Switch (High/Low)
Relay Load Capacity 10A 250VAC / 10A 30VDC
Trigger Mode Adjustable via Potentiometer
PCB Material FR-4 Double Sided
Board Size 42mm x 16mm x 14mm
Weight 15 grams
Package Contents 1 x Sensor Module, 1 x Thermistor Probe

5 reviews

A

Anonymous

Apr 11, 2026

Rating: 5/5

Reliable switching

Been running this for a month controlling a cooling fan. No false triggers and the relay clicks firmly.

A

Anonymous

Feb 24, 2026

Rating: 5/5

Great for automotive use

Installed this to monitor my engine bay temp. The relay switches reliably when the threshold is met. Very happy with the purchase.

A

Anonymous

Jan 31, 2026

Rating: 5/5

Perfect for DIY electronics

Used this with an Arduino project. The digital output makes it very simple to interface without complex coding.

A

Anonymous

Jan 31, 2026

Rating: 4/5

Good module, short wires

Functionality is perfect for my HVAC project. Only wish the probe wires were a bit longer, but I extended them myself.

A

Anonymous

Jan 20, 2026

Rating: 5/5

Accurate and responsive

Tested against a calibrated thermometer and it was within a degree. Easy to adjust the trigger point with the onboard pot.

5 FAQ

Q: Is the thermistor probe waterproof?

A: The metal probe tip is water-resistant, but the connection point should be kept dry or sealed for submersion.

Q: Can this module operate on 24V systems?

A: No, this module is designed for DC 5V to 12V systems. Using 24V may damage the circuit.

Q: Does it come with a wiring diagram?

A: Yes, there is a printed diagram on the PCB silk screen and a digital copy available on our product page.

Q: Can I adjust the temperature threshold?

A: Yes, there is a blue potentiometer on the board that allows you to set the trigger temperature precisely.

Q: What is the maximum current the relay can handle?

A: The relay is rated for 10A at 250VAC or 10A at 30VDC. Please do not exceed these limits.

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