XYWT02 Digital Thermostat Heating and cooling control with and low temperature alarm to protect equipment and processes. Waterproof sensor included; 18B20 digital sensor is not included. When the 18B20 sensor is connected, the temperature automatically switches to the 18B20 test temperature. Supports standard Modbus protocol for easy integration with PLCs and other control systems. Compatible with 18B20 sensor; automatic switching when the 18B20 is connected ensures correct temperature readings. Built for reliable operation in environments where a waterproof sensor is advantageous. Use scenarios Industrial enclosure temperature control: connect to a Modbus network to monitor and regulate cabinet or equipment temperatures with audible/visual alarm triggers. Greenhouse or cold storage environments: use the waterproof sensor to monitor temperature and trigger alarms to prevent spoilage or equipment failure. Data center or electronics cabinet monitoring: employ the thermostat for local temperature control and alarm signaling, with optional 18B20 sensor for precise readings when connected.