The HygroTherm™ is a Thermostat and Humidistat in one! It controls up to 1000 watts of combined temperature and humidity control devices. It has a 2-in-1 Remote Temperature/Humidity Sensor with 5 foot cable. Its great for use with Zoo Meds Repti Fogger™ Terrarium Humidifier or Habba Mist® Automatic Misting Machine. The HygroTherm™ has a nighttime temperature drop feature controlled by a photocell, built in memory which stores settings in case of power failure and an alarm that can be set to flash when the temperature or humidity reaches extreme high or low levels.