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Home / Sensors / Risym Thermal Sensor Module Temperature Switch Sensor Module Thermistor Module (3/4 Wire)

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Sensors
Origin -
Brand Risym
Operating Voltage 3.3V - 5V DC
Sensor Type NTC Thermistor
Detection Range -55°C to 125°C
Output Signal Digital Switch (DO) & Analog (AO)
Adjustable Threshold Yes, via Potentiometer
Indicator LED Power and Trigger Status
Mounting Hole Diameter 3.0 mm
PCB Dimensions 32mm x 14mm
Compatibility Arduino, Raspberry Pi, STM32

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Compact and efficient

Small footprint makes it easy to fit into tight spaces. The LED indicators are bright enough to see status at a glance but not annoyingly bright. Excellent component for the price.

A

Anonymous

Mar 28, 2026

Rating: 4/5

Good value, clear instructions needed

The hardware quality is solid for the price. The only reason for 4 stars is that the pinout wasn't clearly marked on the back of the PCB, so I had to look up a datasheet online. Once wired, it worked flawlessly.

A

Anonymous

Mar 19, 2026

Rating: 4/5

Works well after calibration

Took a little trial and error to get the threshold screw adjusted just right, but once calibrated, it has been rock solid. Using it to prevent my 3D printer part cooling fan from running too early.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect for my Arduino climate project

This module works exactly as described. The potentiometer makes it very easy to set the specific temperature trigger point. I used it to control a small fan when my enclosure got too warm, and it responded instantly.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Reliable and sensitive

I bought three of these for a greenhouse monitoring system. They are very sensitive to temperature changes and the digital output is clean with no jitter. Highly recommend for hobbyist projects.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Great dual output feature

Being able to read both the analog value for precise logging and the digital switch for immediate alarms is a huge plus. The build quality feels sturdy enough for permanent installation.

5 FAQ

Q: What is the maximum current the digital output pin can handle?

A: The digital output pin is intended for signal logic and should not drive high-current loads directly. It can typically source/sink about 20mA; please use a relay or transistor to drive motors or heaters.

Q: Does this module come with the thermistor probe attached or do I need to solder it separately?

A: The thermistor probe is pre-soldered and attached to the module with a short cable, so it is ready to use out of the box.

Q: Can this be used directly with a 12V power supply?

A: No, this module is designed for 3.3V to 5V DC logic levels. Connecting it directly to 12V may damage the onboard comparator chip. Please use a voltage regulator if your source is higher.

Q: Is the cable length between the probe and the PCB extendable?

A: Yes, you can extend the wires connecting the thermistor probe to the board. Just ensure you use insulated wire and maintain proper polarity if you cut the original leads.

Q: Does this support both Celsius and Fahrenheit readings?

A: The module itself outputs raw analog voltage and a digital trigger based on resistance. The conversion to Celsius or Fahrenheit is handled by your microcontroller code, so it supports any unit you program.

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