NTC Thermistor Temperature Sensor Module (4-Pin)
The NTC Thermistor Temperature Sensor Module (4-Pin) offers reliable and precise temperature sensing through its built-in negative temperature coefficient (NTC) thermistor. As temperature rises, the thermistor’s resistance decreases, allowing the module to deliver analog voltage that corresponds to ambient temperature changes.
This module features both analog (AO) and digital (DO) outputs. The analog output delivers continuous voltage proportional to temperature, making it ideal for measurement or monitoring tasks. The digital output flips logic state when temperature crosses a set threshold — adjustable through an onboard potentiometer — enabling it to trigger alarms, relays, or digital interrupts.
With compatibility for both 3.3V and 5V systems, this module integrates seamlessly with popular development boards like Arduino, ESP32, STM32, and Raspberry Pi. It includes convenient LED indicators for power and output status, helping with rapid prototyping and testing.
Compact, durable, and user-friendly, this sensor module suits a wide range of use cases: thermostat control, weather stations, smart home systems, fan or heating regulation, and temperature safety cutoffs. It’s perfect for makers, students, and professionals needing a flexible and accurate temperature sensor in embedded designs.
Key Features
NTC thermistor-based temperature sensing
Dual outputs: Analog (AO) and Digital (DO)
Adjustable triggering threshold via onboard potentiometer
Compatible with 3.3V – 5V systems
Power and output LEDs for straightforward testing
Small form factor for compact projects
Fast thermal response time
Product Specifications
| Specification | Details |
|---|---|
| Operating Voltage | 3.3V – 5V |
| Sensor Type | NTC Thermistor |
| Comparator | LM393 |
| Outputs | Analog (AO) & Digital (DO) – |
| Threshold Adjustment | Yes, via potentiometer |
| Temperature Range | –25°C to +80°C (typical) |
| Module Dimensions | Approx. 37 × 14 × 7 mm |
| LEDs | Power and Output indicators |
| Operating Temperature | –25 °C to +80 °C |
Pin Configuration
| Pin | Label | Description |
|---|---|---|
| 1 | AO | Analog voltage proportional to temperature |
| 2 | GND | Ground |
| 3 | DO | Digital output (HIGH when temperature threshold reached) |
| 4 | VCC | Power supply (3.3V – 5V) |
Applications
Fan control in heating/cooling systems
Thermostat design for HVAC automation
Environmental temperature monitoring (e.g., weather stations)
Overheat protection and safety systems
Aquatic temperature regulation (e.g., fish tanks)
Maker and educational electronics projects
