About this item High performance Plug-and-play design, large LCD screen with wide viewing angle for easy reading. 3 modes are available: M1 temperature control mode, M2 temperature control with timer mode and M3 timer mode. Temperature control range:-40~120/-40~248. Time set: 0-24h/daily cycle. M2 TC+Timer mode for day night temperature control This mode is used for different temperature control for two periods of the day. If you want to keep the temperature of the reptile terrarium at 22~25 degrees from 10:00 to 17:00, and 22~26 degrees from 17:00 to 10:00 the next day, this KT3200PRO thermostat timer plug socket is exactly what you need. M1 TC mode for Temperature control This mode is used for temperature control without time period. Just set start temperature and stop temperature, this thermostat plug socket will work in heating or cooling mode as programmed. (start temperature > stop temperature, cooling; start temperature < stop temperature, heating). M3 Timer mode This mode is used to turn on and off the device in two time periods of 24 hours. For example, if you only want to turn on the heater from 19:00 to 22:00, and turn it off at other times, This KT3200PRO thermostat plug with day night timer can help you, just set Time 1 ON=19:00, Time 2 OFF=22:00. More features 3m NTC 10K temperature sensor probe. Temperature calibration. Reset function. All settings will be saved after power failure (Clock data will be saved for 2 weeks, other settings can be saved permanently). This thermostat timer plug socket can be used for greenhouse, reptile, incubator, freezer, refrigerator, heater, homebrew, fermentation, and other areas.