NTC Thermistor Temperature Sensor Module – LM393 Digital Temperature Detection Sensor
Product Description
The NTC Thermistor Temperature Sensor Module is a compact and sensitive temperature detection module designed for monitoring ambient temperature changes. It uses an NTC thermistor together with an LM393 voltage comparator to provide a simple digital switching output when the temperature reaches the user-defined threshold.
The onboard potentiometer allows the temperature trigger point to be adjusted according to the application requirement. The module also includes separate Power and D0 status LEDs, making it easy to monitor the module’s operating and output states during setup and testing.
Its compact size and built-in mounting hole make it suitable for easy installation in DIY electronics, automation systems, smart-home projects, and temperature-triggered applications.
Features
- NTC thermistor temperature sensing
- LM393 voltage comparator
- Adjustable temperature threshold
- Digital high/low output
- Onboard sensitivity adjustment potentiometer
- Power indicator LED
- Digital output status LED
- Operating voltage from 3.3V to 5V DC
- Compact 32 × 14mm design
- Built-in mounting hole
- Suitable for Arduino, ESP32, Raspberry Pi, and other microcontrollers
Specifications
| Parameter |
Specification |
| Sensor Type |
NTC Thermistor |
| Comparator Chip |
LM393 |
| Operating Voltage |
3.3V – 5V DC |
| Output Format |
Digital Switching Output (0 and 1) |
| Driving Capacity |
>15mA |
| Dimensions |
32mm × 14mm |
| Sensitivity |
High, Adjustable via Potentiometer |
Working Principle
The NTC thermistor changes its electrical resistance according to the surrounding temperature. The LM393 comparator compares the sensor signal with the adjustable reference level set using the onboard potentiometer.
When the temperature crosses the selected threshold, the module changes its digital output state, allowing a connected microcontroller or control circuit to detect the temperature condition.
Typical Application Scenarios
Overheat Protection
Can be used to trigger a fan, buzzer, relay, or other device when the temperature exceeds a selected level.
Climate Control
Suitable for simple temperature-triggered control systems such as small greenhouse or enclosure projects.
Fire and Heat Detection
Can be used for basic temperature-rise detection and experimental alarm systems.
Smart Home
Useful for automation projects that activate devices based on temperature conditions.
Applications
- Temperature detection
- Overheat protection
- Thermostat projects
- Smart home automation
- Greenhouse projects
- Fire alarm prototypes
- Arduino projects
- ESP32 projects
- Raspberry Pi projects
- DIY electronics
- Automation systems
- Educational electronics
Package Includes
- 1 × NTC Thermistor Temperature Sensor Module (Digital Output)
Important Product Disclaimer
Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. Product images are shown for illustrative purposes only and may differ from the actual product.
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Frequently Asked Questions
1. What is the NTC Thermistor Temperature Sensor Module?
It is a temperature detection module that uses an NTC thermistor and LM393 comparator to provide a digital temperature-triggered output.
2. What voltage does the module require?
It operates from 3.3V to 5V DC.
3. Does it provide digital output?
Yes. The module provides a digital High/Low (0/1) output.
4. Can I adjust the temperature trigger point?
Yes. The onboard potentiometer allows you to adjust the temperature threshold.
5. What is the LM393 used for?
The LM393 comparator converts the thermistor's temperature-dependent signal into a stable digital switching output.
6. Does the module have indicator LEDs?
Yes. It includes a Power LED and a digital output status LED.
7. Can I use it with Arduino?
Yes. It can be connected to Arduino and other compatible microcontrollers through its digital output.
8. Can I use it with ESP32?
Yes. It can be used with ESP32 when operated within the specified voltage range.
9. What can I use this sensor for?
It can be used for overheat detection, temperature-triggered fans, alarms, climate control, smart-home automation, and educational projects.
10. What are the module dimensions?
The module is approximately 32mm × 14mm.
11. Does it measure exact temperature?
The provided specifications describe it as an adjustable temperature threshold detection module, rather than an exact digital temperature measurement sensor.
12. Is the sensor included in the package?
Yes. The package includes 1 × NTC Thermistor Temperature Sensor Module with Digital Output.
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