This thermostat, with a 5 foot extendable stainless steel sensor, is perfect for controlling the temperature of your freezer, refrigerator, air conditioner, or heater for Fermentation or lagering. Not affected or damaged by electrical grid surges and lightning strikes, or power outages - like a digital thermostats are! Easy to use, just plug it in, and plug the appliance you want to control intThis thermostat, with a 5 foot extendable stainless steel sensor, is perfect for controlling the temperature of your freezer, refrigerator, air conditioner, or heater for Fermentation or lagering. Not affected or damaged by electrical grid surges and lightning strikes, or power outages - like a digital thermostats are! Easy to use, just plug it in, and plug the appliance you want to control int... Product Review! Refrigerator or Freezer Thermostat (Temperature Controller) , Lowest Price for Refrigerator or Freezer Thermostat (Temperature Controller) , Refrigerator or Freezer Thermostat (Temperature Controller) For Sale.