1、Multifunctional: This plug temperature controller outlet is multifunctional with timer cycle and countdown timer functions. F01 is cycle timer mode, F02 is countdown ON mode, F03 is countdown OFF mode, F04 is countdown ON and countdown OFF mode. Timing range is 0‑99 hours and 59 minutes. 2、Backlit LCD Display: This plug thermostat temperature controller features a backlit LCD display that makes it easy to view current and set temperature values in dark environments. 3、Easy To Use: This temperature controlled outlet is easy to use, it will control the heating or cooling mode based on the start and stop temperatures. When start temperature > stop temperature, it will enter cooling mode, when start temperature < stop temperature, it will enter heating mode. It also has calibration, memory, reset and lock screen guard functions to make it easier to use. 4、Excellent ABS Material: This digital plug in thermostat outlet is made of excellent ABS material, which is sturdy and abrasion resistant, not easy to be damaged, and has a long service life. 5、Wide Application: This digital temperature controller outlet has a wide range of applications and is widely used in homes, reptiles, greenhouses, incubators, glass containers, refrigerators, zoos, fermentation and many other places where temperature control is required.