Analog Temperature Sensor Module (KY 013)

Analog Temperature Sensor Module (KY-013) Overview

The Analog Temperature Sensor Module (KY-013) is a compact thermistor-based sensor module that provides an analog voltage output proportional to ambient temperature. It is designed for hobbyist and professional electronics projects that need accurate temperature monitoring, including weather stations, HVAC control, environmental monitoring, and industrial sensors.

Key Features

Thermistor-Based Sensing

• Detects temperature by measuring the resistance change of a thermistor.
• Stable performance across a wide temperature span with suitable thermistor selection.

Analog Output for Easy Integration

• Provides an analog voltage (AO) that varies with temperature for direct connection to ADC channels.
• Works with Arduino analog pins, external ADCs for Raspberry Pi, and most microcontroller systems.

Wide Operating Range and High Precision

• Typical measurement range: -55°C to +125°C, depending on the thermistor model.
• High accuracy potential; supports calibration to reduce systematic error in specific installations.

Technical Specifications

• Sensor type: Thermistor-based temperature sensor
• Output: Analog voltage proportional to temperature (AO)
• Operating voltage: Typically 5V DC (verify module version before use)
• Temperature range: -55°C to +125°C (thermistor dependent)
• Connector: Standard 3-pin header or solder pads (VCC, GND, AO)
• Form factor: Small PCB module suitable for breadboards and enclosures

Compatibility and Interfacing

Basic Wiring

• VCC to 5V DC (check your module; some variants support 3.3V)
• GND to system ground
• AO to microcontroller analog input or to an external ADC for single-board computers

Using with Arduino and Raspberry Pi

• Arduino: connect AO to an analog pin (A0, etc.) and read the value with analogRead()
• Raspberry Pi: use an external ADC (MCP3008, ADS1115) to convert AO to a digital value, then compute temperature in software
• Calibration: measure a known reference temperature and apply an offset or use the Steinhart-Hart equation for high-precision conversion

Typical Applications

• Weather stations and environmental monitoring
• HVAC control and home automation systems
• DIY electronics, data logging, and prototypes
• Industrial temperature monitoring in machinery and storage

Practical Tips

• Verify module supply voltage before connecting to avoid damage.
• For higher accuracy, perform a multi-point calibration across the expected temperature range.
• Use shielding or filtering if the analog signal is noisy in electrically noisy environments.
• When integrating outdoors, place the sensor in a radiation-shielded enclosure to reduce direct sun heating errors.

Note

Images are for illustration only. Actual module design and thermistor characteristics may vary by manufacturer. Verify thermistor type, operating voltage, and pinout before installation.

The KY-013 Analog Temperature Sensor Module is an affordable, easy-to-use solution for accurate temperature sensing in a wide range of electronics projects and control systems.