NTC Thermistor Temperature Sensor Module

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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