The KY-028 Digital Temperature Sensor Module is a compact and versatile temperature sensing module designed for Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontroller-based projects. Using a thermistor-based sensing element, the module detects temperature changes and provides both analog and digital outputs for flexible integration into automation, monitoring, and control systems.

The onboard LM393 comparator and adjustable potentiometer allow users to set custom temperature detection thresholds for digital output triggering. This makes the KY-028 ideal for temperature alarms, environmental monitoring, smart home systems, industrial automation, educational projects, and DIY electronics applications.

With dual output capability and simple interfacing, the KY-028 temperature sensor module is widely used by students, makers, engineers, and IoT developers for real-time temperature monitoring and control.

Features:

• High-quality KY-028 temperature sensor module

• Thermistor-based temperature detection

• Provides both analog and digital outputs

• Adjustable temperature threshold using onboard potentiometer

• Built-in LM393 voltage comparator

• Real-time temperature monitoring

• Fast response to temperature changes

• Compact and lightweight design

• Easy integration with Arduino and microcontrollers

• Digital output for temperature alarm applications

• Analog output for precise temperature measurement

• Onboard status indicator LED

• Stable and reliable performance

• Low power consumption

• Suitable for educational and industrial projects

Featured by BDTronics

BDTronics supplies tested sensor modules and development components for students, robotics enthusiasts, engineers, and automation professionals. The KY-028 Temperature Sensor Module is selected for its reliability, ease of use, and compatibility with a wide range of development platforms.

Specifications:

• Model: KY-028

• Sensor Type: Thermistor Temperature Sensor

• Comparator IC: LM393

• Output Type: Digital and Analog

• Detection Method: Temperature-dependent resistance change

• Threshold Adjustment: Onboard Potentiometer

• Operating Voltage: 3.3V – 5V DC

• Interface: Analog Output (A0), Digital Output (D0)

• Compatibility: Arduino, ESP32, ESP8266, Raspberry Pi, STM32, AVR, PIC

• Indicator LED: Yes

Pin Configuration:

• VCC: Power Supply (3.3V–5V)

• GND: Ground

• A0: Analog Output

• D0: Digital Output

How to Use:

• Connect VCC to 3.3V or 5V power supply

• Connect GND to system ground

• Connect A0 to an analog input pin for temperature measurement

• Connect D0 to a digital input pin for threshold detection

• Adjust the onboard potentiometer to set the desired trigger temperature

• Upload temperature monitoring code to the microcontroller

• Read analog values for continuous monitoring

• Monitor digital output for temperature threshold events

Applications:

• Arduino temperature projects

• Temperature monitoring systems

• Smart home automation

• Environmental sensing

• Temperature alarm systems

• Industrial control systems

• Educational electronics projects

• Robotics applications

• IoT monitoring systems

• HVAC monitoring

• Electronic equipment protection

• Data logging systems

• Weather monitoring stations

• Laboratory experiments

• Embedded system development

Advantages:

• Dual analog and digital outputs

• Adjustable trigger threshold

• Easy microcontroller integration

• Fast response time

• Compact design

• Low power consumption

• Reliable temperature detection

• Ideal for learning and prototyping

Package Includes:

• 1 × KY-028 Digital Temperature Sensor Module

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