Easy to UseThe terrarium thermostat plug-and-play, relay output. Easy to program and safe to use. The thermostat socket supports reading in Celsius or Fahrenheit. Temperature control range: -40~120/-72~176. Temperature Control Accuracy: 1%. Power supply voltage: 100~250V AC 50/60Hz. 5 Control ModesThe heating cooling thermostat has 5 control modes for selection(Temperature Control Mode; F01 Cyclic Timing Mode; F02 Count Down ON Mode; F03 Count Down OFF Mode; F04 Count Down ON and OFF Mode). Heating and CoolingThe thermostat socket can be set to start and stop temperature to control the heating/cooling mode, and it controls the heater or cooler to work according to the setting. Start temperature > stop temperature, the cooling operation starts; start temperature < stop temperature, the heating operation starts. Other FunctionsThe temperature controller has other functions: backlit LCD display; temperature calibration; Factory reset; Data storage(which can save all current settings after power off). Multiple UsesThe temperature controller thermostat with probe is widely used for greenhouse, reptile, incubator, terrarium, freezers, refrigerators, heaters, fermentation, heat mat and other temperature controlled systems.