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NTC Thermistor Digital Temperature Sensor Module

SKU: R819N0G3TB
★★★★ ★ ★
4.3 (68 reviews)
The NTC Thermistor Digital Temperature Sensor Module is a compact and sensitive temperature detection module designed for temperature monitoring, threshold detection, overheat protection, alarm systems, and automatic temperature control projects. The module uses an NTC (Negative Temperature Coefficient) thermistor as its temperature-sensing element and an LM393 voltage comparator to provide a clean digital switching signal. The NTC thermistor changes its...
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The NTC Thermistor Digital Temperature Sensor Module is a compact and sensitive temperature detection module designed for temperature monitoring, threshold detection, overheat protection, alarm systems, and automatic temperature control projects. The module uses an NTC (Negative Temperature Coefficient) thermistor as its temperature-sensing element and an LM393 voltage comparator to provide a clean digital switching signal.

The NTC thermistor changes its electrical resistance according to temperature. As the temperature increases, the resistance of the NTC thermistor decreases. The onboard comparator circuit compares the sensor signal with a reference level set using the adjustable potentiometer and changes the digital output when the configured temperature threshold is crossed.

The module commonly operates from 3.3V to 5V DC, making it suitable for Arduino, ESP32, ESP8266, STM32, Raspberry Pi Pico, RP2040, PIC, AVR, and other development platforms. Common module versions offer an adjustable digital output, while some 4-pin variants also provide a direct analog output from the thermistor circuit.

With its simple interface, adjustable threshold, onboard status indicators, and compact size, the module is suitable for temperature alarms, cooling fan control, overheating detection, home automation, equipment protection, and educational electronics projects.

Key Features

  • Uses an NTC thermistor for temperature detection
  • Resistance decreases as temperature increases
  • LM393 voltage comparator circuit
  • Adjustable temperature detection threshold
  • Onboard potentiometer for sensitivity adjustment
  • Clean digital HIGH/LOW switching output
  • Operating voltage from 3.3V to 5V DC
  • High sensitivity to temperature changes
  • Power indicator LED on common versions
  • Digital output status LED
  • Compact and lightweight PCB design
  • Simple microcontroller interfacing
  • Suitable for temperature-triggered alarms
  • Useful for automatic cooling fan control
  • Suitable for over-temperature protection circuits
  • Easy integration with robotics and automation systems

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: NTC Thermistor Temperature Sensor Module
Sensor Type: NTC Thermistor
Comparator IC: LM393
Operating Voltage: 3.3V to 5V DC
Temperature Detection Range: Approximately -25°C to +80°C on commonly specified module versions
Output Type: Digital Switching Output
Digital Output Logic: HIGH / LOW (0 and 1)
Analog Output: Available on Common 4-Pin Versions
Threshold Adjustment: Onboard Potentiometer
Sensitivity: Adjustable
Digital Output Driving Capability: Greater Than 15mA on Commonly Specified Versions
Power Indicator: LED
Output Status Indicator: LED
Typical PCB Size: Approximately 32mm × 14mm or 37mm × 14mm, Depending on Module Version
Mounting Hole: Available on Common Versions
Sensor Response: Resistance-Based Temperature Detection
Calibration: Recommended for Accurate Temperature Measurement
Compatibility: Arduino UNO, Nano, Mega, ESP32, ESP8266, STM32, Raspberry Pi Pico, RP2040, PIC, AVR and Other Compatible Controllers.

Additional Resources

Digital Temperature Sensor.PDF

FAQ

1. What is the NTC Thermistor Digital Temperature Sensor Module used for?

The module is used for temperature detection and threshold-based control. It is commonly used in temperature alarms, cooling fan controllers, overheat protection systems, home automation, robotics, and microcontroller projects.

2. How does the NTC Thermistor Temperature Sensor Module work?

The module uses an NTC thermistor whose resistance decreases as temperature increases. The LM393 comparator compares the sensor signal with the threshold set by the onboard potentiometer and changes the digital output when the threshold is crossed.

3. Can the temperature detection threshold be adjusted?

Yes. The onboard potentiometer allows the switching threshold of the digital output to be adjusted according to the application's temperature detection requirements.

4. Can this module be used with Arduino and ESP32?

Yes. The module operates from 3.3V to 5V and can be used with Arduino, ESP32, ESP8266, STM32, Raspberry Pi Pico, RP2040, PIC, AVR, and other compatible microcontrollers.

5. Does the NTC Thermistor Sensor Module provide an exact temperature reading?

The digital output is mainly intended for threshold detection rather than direct numerical temperature measurement. Modules with an analog output can be used to estimate temperature, but calibration and suitable conversion calculations are required for accurate readings.