Where can a buy a cover for my refrigerator temperature gauge to save energy?

I read about something in the UK version of ‘The Week’ magazine several months ago. It is a cover (I think made of wax) for your fridge thermometer. The wax stays the same temperature as the food in the fridge because it is a similar consistency, so the fridge operates more efficiently, only turning on the cold when the wax gets too warm, instead of turning on just in response to the air getting warmer (which might be completely temporary, due to door opening). I can’t find it anywhere, but I know I read about it…

Keep it simple poke hole in top of pop can route sensor into bottle or can works great

Taylor Food Service Classic Series Freezer-Refrigerator Thermometer, Large Dial $2.18 Extra large 3 1/4” dial. Accurate from 20 F. to 80 F. Safe temperature zone indicators. Hangs or stands. NSF listed….

REFRIGERATOR/FREEZER WIRELESS DIGITAL THERMOMETER KITCHEN ESSENTIALS ACU-RITE DIGITAL THERMOMETER FOR REFRIGERATOR/FREEZER. AUDIBLE AND VISUAL ALARM WHEN TEMPERATURES EXCEED YOUR PRE-SET MINIMUM AND MAXIMUM SELECTION. REMOTE SENSORS ARE EQUIPPED WITH SPRING ACTION CLIPS TO SECURE INSIDE REF OR FREEZER. SUCTION CUPS INCLUDED. MAIN UNIT IS EQUIPPED WITH A FOLD-OUT STAND AND MAGNETS ON BACK OF UNIT. TEMP RANGE -40 F TO 158 F. MAIN UNIT USES 2 …

Johnson Controls A19AAT-2C Freezer Temperature Controller $48.50 Use this handy controller to regulate the temperature in your freezer between 20 – 80F . Great for turning a chest freezer into a keg refrigerator. Strictly a mechanical thermostat for cooling only, it is simple to use and economical. It operates with a gas filled probe on a 6-foot capillary tube. When the gas contracts or expands in the probe, it triggers a mechanical device inside the control wh…

Black & Decker TLD100 Thermal Leak Detector $23.99 The Black & Decker thermal leak detector helps you increase the efficiency of your home’s insulation by finding leaky areas that can lead to higher heating and cooling bills. You’ll instantly identify problem areas around drafty windows and doors, and uncover hidden leaks and insulation “soft spots” around your home. Check windows, ducts, and walls with the thermal reference light that indicates h…

Johnson Controls Digital Thermostat Control Unit $68.00 Convert any freezer into a kegerator! Just plug the freezer into the outlet cord, place the gas-filled sensor in the area to be controlled and program the temperature. This manual thermostat simply turns off the freezer when it reaches the specified temperature. Other features include a lockable touchpad temperature adjustment, a 6-foot power cord and a 6-foot outlet cord….

Reliance Controls THP207 Plug-In Power Failure Alarm with LED Flashlight $10.75 The Reliance Controls plug-in power failure alarm comes complete with an 8-hour LED backup light. A great way to avoid mishaps caused by unnoticed power failures — including basement flooding, freezer thaw, and sleeping in — an audible alarm will sound when your home’s electricity fails. Simply plug the alarm into any 120-volt outlet and the alarm is ready to serve you. CSA Certified for the US …

VWR FRIDGE/FREEZER THERMOMETER – VWR Digital Refrigerator/Freezer Thermometer with Alarm $28.31 Reads in degrees C or degrees F Dual scale thermometer is ideal for monitoring temperature in refrigerators or freezers containing sensitive items. Digital thermometer features a high/low temperature alert setting and a minimum/maximum temperature memory. Displays temperature in refrigerator/freezer or room temperature. Temperature sensor is waterproof and equipped with a 1m (39″) cord. Oper…

Thermometer with Alarm – VWR Refrigerator/Freezer Thermometers – Model 61161-364 – Each $65.17 Traceable Monitor temperatures in freezers, refrigerators, incubators, water baths, and heating blocks with the enclosed “temperature buffered” sensor. Probe is sealed in a miniature bottle filled with nontoxic glycol solution that provides accurate readings when doors are opened. Eliminates mercury contamination. Triple readout simultaneously shows current, high, and low temperatures. Minim…

Refrigerator Thermometer – VWR Traceable Refrigerator Thermometers – Model 36934-132 – Each $20.48 Switchable degrees C/ degrees F Economical, lightweight thermometers are ideal for monitoring temperatures in storerooms, labs, offices, and hoods. The see-through LCD updates every 30 seconds and features large 1.3cm (1/2″) digits. Included attachment devices allow for flexible positioning. A serial numbered certificate is provided from an ISO 17025 calibration laboratory accredited by A2L…

ENGEL EDTHERM Wireless Thermometer $33.98 Wireless Thermometer Measures both ambient and fridge-freezer temperatures in either Celsius or Fahrenheit.Records and stores both minimum and maximum temperatures. Temp range for ambient sensor: 32F ~ 140F(-0C ~ +60C) Temp range for fridge sensor: 21.8F ~ 157.2F(-29.5C ~ +68.9C) Resolution is 0.2F (0.1C) Transmitting range maximum 80feet (25M) open space Transmitting frequency: 433MHz Tempe…