Analog Temperature Sensor Module KY-013

Analog Temperature Sensor Module KY-013

Sensors
DET563
Part.No: KY-013
€2.75
In Stock
Immediate Dispatch
KY-013 Analog Temperature Sensor Module uses a thermistor to detect real-time ambient temperature changes and output analog voltage to any microcontroller ADC pin. Simple 3-pin interface, ideal for Arduino projects.

 

The KY-013 Analog Temperature Sensor Module (MPN: KY-013) is a compact thermistor-based sensor module that detects real-time ambient temperature changes and outputs an analog voltage signal. As temperature rises, the thermistor resistance changes accordingly, allowing any microcontroller with an ADC input to read and convert the signal into Celsius values through simple programming. Its straightforward 3-pin design makes it one of the most beginner-friendly temperature sensors in the Arduino ecosystem.

Key Features

  • Thermistor-based sensing: Resistance varies with ambient temperature → enables real-time analog temperature readings
  • Analog output: Outputs a continuous analog voltage signal → compatible with any ADC-capable microcontroller pin
  • 3-pin interface: Simple VCC, GND, Signal wiring → plug-and-play integration with no extra components needed
  • Compact module form factor: PCB-mounted thermistor with header pins → easy to breadboard or solder into a project

Pinout & Wiring

PINSymbolDescription
1GNDGround – connect to GND on your microcontroller
2VCCPower supply – connect to 5V or 3.3V
3S (Signal)Analog output – connect to any analog input pin (e.g. A0 on Arduino)

Wiring note: Connect the Signal pin to an analog input (e.g. A0 on Arduino UNO). Read the ADC value and apply the thermistor resistance-to-temperature formula (Steinhart–Hart or B-parameter equation) in your sketch to obtain °C readings.

Compatibility

  • Arduino UNO / Nano / Mega: Fully compatible – connect VCC to 5V and Signal to any analog pin (A0–A5).
  • ESP32 / ESP8266: Compatible at 3.3V – connect VCC to 3.3V and Signal to any ADC-capable GPIO.
  • Raspberry Pi: Requires an external ADC (e.g. MCP3008) since Raspberry Pi lacks native analog inputs.

Typical Applications

  • Home automation & smart thermostats: Monitor room temperature and trigger heating/cooling relays automatically.
  • Garden & greenhouse monitoring: Track soil or air temperature to automate irrigation or ventilation systems.
  • Home alarm systems: Detect abnormal temperature rises as part of a fire or overheat alert circuit.
  • Weather stations: Log ambient temperature data alongside humidity and pressure sensors.
  • Student & hobbyist projects: Learn ADC reading, sensor calibration, and Steinhart–Hart math on Arduino or ESP32.

Technical Specifications

ParameterValue
InterfaceAnalog (ADC)
Output SignalAnalog voltage
Sensor TypeNTC Thermistor
Pin Count3 (GND, VCC, Signal)
MPNKY-013

Frequently Asked Questions

Q: How do I convert the KY-013 analog reading to Celsius?
A: Read the ADC value, calculate the thermistor resistance from the voltage divider equation, then apply the Steinhart–Hart or B-parameter equation. Many ready-made Arduino libraries and sketches are available online for the KY-013.

Q: Can I use the KY-013 with a 3.3V board like ESP32?
A: Yes. The module works with both 5V and 3.3V supply. Connect VCC to 3.3V and the Signal pin to any ESP32 ADC-capable GPIO.

Package Contents: 1 × KY-013 Analog Temperature Sensor Module
⚠ Note: This module outputs an analog signal only. A microcontroller or ADC is required to read and interpret the temperature value.
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