Multi-function: F01 cycle timer mode; F02 countdown on mode, F03 countdown off mode, F04 countdown on mode and countdown off mode. Setting range: 0 to 99 hours 59 minutes. With data storage function, after power off can save all the parameters set.<br>High performance: The thermostatic outlet can be displayed in degrees Celsius or Fahrenheit with a 1.7m NTC temperature sensor. Temperature control range: -40°C~120°C/-72°F~176°F, temperature control accuracy: ± 1%AC 50/60 Hz. Output: Maximum 15A/120V/1800W. Start temperature > stop temperature, cooling operation begins; Start temperature < stop temperature, heating operation begins.<br>Safe to use: Plug and play design, using highly conductive copper plate, copper rust resistance. Safety socket to prevent children from misinserting. Appearance using PC flame retardant material, high temperature flame retardant. Set the temperature range, place the probe, plug the heater/cooler into the marked outlet. Support heating and cooling modes, suitable for beginners and professional users.<br>"Widely used: Widely used in greenhouse, reptile, incubator, terrarium, freezers, refrigerators, heaters, refrigerators, home brewing, animal feeding rooms, fermentation, heating pads and other temperature control systems. It can also be used as a timer for cycle time and countdown. "<br>Temperature calibration: Press and hold the power-on MODE button, and adjust the temperature in real time 2 seconds later. Real-time temperature calibration range: -9.9~9.9℃. Press and hold the SET button for 5 seconds to automatically exit without saving the modification.