The W1209 Digital Temperature Controller is a DC 12V temperature-control module that uses a waterproof NTC 10KΩ thermistor sensor. It measures temperatures from approximately -50°C to +110°C with a 0.1°C display resolution and shows the temperature on a 3-digit LED display. It has SET, UP, and DOWN buttons for configuration and a 1-channel relay with COM, NO, and NC terminals, commonly rated up to 10A. It can operate in heating or cooling mode and automatically switches the relay according to the selected temperature setting. For the RESTORE project, it can be used for temperature monitoring, while the ESP32 can be used to collect and transmit temperature data to the ML system.