Package Contents: 2 x W1209 Digital Temperature Controller Board, Features: The temperature controller board features full machine patching, wave soldering, stable performance and good consistency; The built-in CPU chip, namely MCU, is smarter and consumes less power.NTC Probe: The NTC probe is waterproof and can control the temperature, allowing you to control heating or cooling.Electronic Digital Thermostat: With 3-digit LED display, extremely bright. Both heating and cooling operation to easily control equipment and appliances.Tips: Long press set to get the menu, start P0, press + or - to get the next parameter P, press set to choose this parameter, press + or - to select the desired value for this parameter, press set to accept it, long press + or - = reset to default, power off is reset to default, the default temperature is 34.5 degrees Celsius.Size48.5*40.1*15.8MM Note: The data are all manual measurements, please allow an error of 1 - 79cm, due to the difference in light and display, there will be a certain color difference, whichever is the actual object received.