Description 1. Function The external temperature detector can monitor temperature and allows setting of start and stop temperatures. Supports cycle timing, start/stop time configuration, and timer switch functions. Widely used in intelligent control applications such as heating systems, aquaculture, greenhouses, and household environments. 2. Technical Parameters Voltage: 230V AC 50Hz Max Load: 16A (3680W), 120V 15A for US version Temperature Range: -40°C to 120°C Accuracy: ±1% Timing Accuracy: Up to 10 minutes Open circuit (or below -40°C): First line of display flashes E1; -40°C to -45°C displays as -40°C Short circuit (or above 120°C): First line of display flashes E2; 121°C to 129°C displays as 120°C Below -10°C or above 100°C: Temperature display does not show decimal values Refrigeration mode: Set start and stop temperatures Heating mode: Set start and stop temperatures 3. Mode Button Press MODE to switch between temperature control mode and timing modes F01-F04 on the LCD display.