Automatically turns power on and off according to ambient air temperature.

Turns on at temperatures less than 35 degrees and off at 45 degrees.

Saved electricity repays initial cost.


520008 ThermoCube In Stock 0.20 $15.50

Common Uses

Save electricity when using with the following items:

  • Heat lamps
  • Tank de-icers
  • Engine block heaters
  • Pond de-icers


  • 3 1/4" long
  • 1 1/4" wide
  • 1" depth
  • Maximum wattage 1800.
  • Turns on at less than 35˚F (2˚C)
  • Turns off at 45˚F (7˚C)


The ThermoCube can be plugged into any temperature sensitive device on the farm to take the guessing out of when cold weather will hit.

How to Use

Plug ThermoCube into 110 outlet and then plug heat lamps, buckets, engine block heaters, etc. into it.


Use an outlet that is grounded.

Item # 557000 - While supplies last!
While Supplies Last! All sales are final, no returns.
Item # 557100 - In Stock
Common heat lamps are often blamed for barn fires, scorched wool and overheating.
Average Rating: 4.7 out of 5
Number of Reviews: 10 customers reviewed this product.

Write a Review

Date: March 16, 2015
Leslie T from Oklahoma
Would you recommend this product? Yes
Awesome! Keeps me from having to guess what the temperature is going to be all day before I go to work! Next year we are getting some for the water heaters!
Date: March 10, 2015
Susan L from Georgia
Would you recommend this product? Yes
I can't rate how this worked yet because of the kind of outlets we have. Both outlets where we want to use this for a chicken coop heat lamp and tank de-icers were installed in grey plastic boxes with covers since they are exposed to the weather. The plug is too wide to fit inside the box. :( So I need to find simple extension plugs, and then see if they will still work.
Date: January 18, 2015
Shirley C from Arkansas
Would you recommend this product? Yes
Works great and arrived on time. Love it
Date: December 2, 2014
Sarah N from Sarah Newton from Kentucky
Would you recommend this product? Yes
This works wonderfully. It saves us $$ because it kicks on at 35 like it is suppose to and kicks off when it reaches 45. Will be purchasing more later when lambing season begins and we need more heatlamps.
Date: May 13, 2013
Johnny S from S.E. Idaho
Would you recommend this product? Yes
What a great idea! No more forgetting to turn off the heat lamp! Will probably get more later for water buckets.
Date: October 26, 2012
Janine C from Canada
Would you recommend this product? Yes
I have been looking all over for a thermocube in Canada and couldn't seem to find one. I will recommend Premier1 to all my poultry peers! The product is great and the customer service at Premier1 is fantastic!!! I will shop here again for sure. Janine
Date: October 2, 2012
Robert B from Colorado
Would you recommend this product? Yes
I have been waiting for this inexpensive thermostat for decades. It is far better than the other type of units I have installed. Using the KISS rule (keep it simple stupid) this baby fits perfectly.
Date: December 17, 2011
Don A from Colorado
Would you recommend this product? Yes
Have been using this for about 2 weeks for the chickens' heat lamp. It seems to be working very well. I like not having to unplug the light so early in the morning before I leave, when it's still pretty cold out.
Date: February 12, 2011
valery r from canada
Would you recommend this product? No
Unfortunately, 2 out of 3 f the units purchased are unuseable because the cubes'prongs are misaligned and items cannot be plugged in without bending the prongs to squeeze them in to try and fit them....I will contact Premier about this and I am sure they will fix the situation (credit or replace)
Date: October 22, 2010
Micheal A
Would you recommend this product? Yes
I ordered enough for friends that wrer not sure...after they see mine working, I may sell them 1 at cost. Great item...... @(*o*)@
Date: June 19, 2010
Gail S
Would you recommend this product? Yes
Using these for all my heated water sources means I don't have to plug and unplug the buckets all the time. I use them for the dogs, cats, horses, sheep, all the farm animals we have including the bird bath heater. Savings on the electric bill was noticeable when I was just using a couple so I'm getting one for every water heated bucket we own.
Date: February 6, 2010
Clifford C
Would you recommend this product? Yes
This works