Thermal Sensors, Controllers and Infrared Thermometers
Thermal sensors are designed to output temperatures of your computer's coolant, or any open device such as a heatsink, hard drive, SSD, or similar other surface mounted chips. Some are passive, providing a thermal sensor for a fan or pump controller input only. Others have a digital screen to visually indicate temperatures in Fahrenheit and Celsius. Typically, a thermal sensor will have only two wires.