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Alert System Type
Temperature / Humidity Alert
Sensor Type
Temperature / Freeze
Thermostat Types
110V AC
Ease of Installation
Beginner (Installs < 10 minutes)
Thermo Cube
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Temperature Controlled Outlet Helps Avoid Weather-Related Catastrophes!
Thermo Cube TC-3 - On at 35 Degrees, Off at 45 Degrees
Thermo Cube TC-3 - On at 35 Degrees, Off at 45 Degrees
Thermo Cube TC-3 - On at 35 Degrees, Off at 45 Degrees
Item# 7143
Price: Normally $18.99 
Hot Deal $11.63
Free shipping on orders over $50 - See Details


  • Automatically turns devices on and off according to air temperature
  • Save electricity by running equipment only when necessary
  • Perfect for basic automation of weather-related devices without an intelligent controller
  • Instant installation - Just plug them in!

Essential Info

Plug your appliance into the cold weather Thermo Cube and plug it into the wall. When the temperature drops below 35° the Thermo Cube will turn your appliance ON. When the temperature rises above 45° it will turn your appliance OFF. Each unit has two receptacles for use with more than one device for loads up to 1800 Watts, 15 Amps, 120VAC. The Thermo Cube is available with different temperature ranges to suit your specific needs. It is recommended that the Thermo Cube is used with GFCI outlets.


What's Included

  • 1x - Thermo Cube - 35° ON/45° OFF
  • More Info

    Use this Thermo Cube to automate self-regulating heat tape, heat lamps, stock tank heaters, pond de-icers, engine-block heaters. If it gets too cold in the attic because the pilot light blew out when gas service was interrupted, you can have it turn on a space heater. You can even use the Thermo Cube with a strobe light to create a "Freeze Warning" system that can be seen by neighboring homes or buildings.



    Manufacturer:Thermo Cube
    Manufacturer Product No.:TC-3
    Maximum Rating:1800 Watts, 15 Amps, 120VAC
    Dimensions:3-3/16" (W) x 1-5/16" (H) x 1" (D).
    Approval:UL and CSA (for Canada)
    Warranty:1 year, limited


    163 Ratings
    5 star: 71%  (115)
    4 star: 15%  (24)
    3 star: 7%  (11)
    2 star: 1%  (2)
    1 star: 7%  (11)
    Average Customer Rating
    (163 customer ratings)
    Share your thoughts with other customers
    DAVID -- moneta, VA   7/31/2014
    nice product it was shipped and received before the due date of shipping. i couldnt be happier witht he service, keep it up.
    DAVID -- forrest city, AR   5/15/2014
    Excellent product.
    JERRY -- huntsville, AL   3/25/2014
    Unit works as designed, turning off and on at the proper temperature. Had the same problem others mentioned with the difficulty of inserting the prongs. The ground prong is poorly formed and requires squeezing with pliars to allow insertion.
    JERRY -- bothell, WA   3/8/2014
    Using this to control the water pipe heater in my garage. Wish I would have had this earlier to avoid the damage from a freeze.
    RANDALL -- roan mountain, TN   3/7/2014
    As described / fast shipper / will buy from again / AAA+++
    DOUGLAS -- brentwood, TN   2/6/2014
    Exactly what was ordered, delivered on time and at a very good price
    Lars -- johnson city,TN   1/30/2014
    The Thermocube came on at 35 degrees as advertised but cuts off atb 36 degrees not the 45 degree advertised temperature.
    MICHAEL -- yacolt, WA   1/19/2014
    arrivede as ordered in good condition.
    STEPHEN -- rixeyville, VA   1/17/2014
    Good Deal.. Work awesome.
    DAVID E. -- orofino, ID   1/15/2014
    The units we received appear to be working as desired, but we want to reserve judgment until we have had them in operation for a while.
    ALISON -- warner springs, CA   1/9/2014
    This thing is great. I have a heat lamp plugged into it under the sink in a camp trailer. No broken pipes this year!
    WALTER -- independence, MO   1/4/2014
    Good idea, but will not fit in my outdoor receptacle box. I will have to mickey mouse the electrical cords to make it work. Too cold to fool with it now.
    BUFORD L -- clifton, TX   12/22/2013
    As advertised.
    RICHARD -- homer, AK   12/22/2013
    They work great for turning on heat tapes on my water lines in Alaska.
    RUSS -- bakersfield, CA   12/20/2013
    Fast response, arrived in good condition. Excellent pricing too.
    EDDIE -- argos, IN   12/15/2013
    very nice products and priced right I will buy again from you
    JESSE -- doyle, CA   12/9/2013
    The thermo cube works as anticipated!
    MARSHALL -- milan, MI   12/5/2013
    Works great and less expensive from previous models I have purchased.
    DAVID -- wilson, NC   12/1/2013
    Great product. I bought one ten years ago and is still working fine. Needed one for another location.
    CYNTHIA -- santa fe, NM   11/17/2013
    Great product, just what I needed to keep the water in my chicken coop from freezing overnight and keeping my electric bill down during the day!


    20 On/30 Off Thermo Cube  78 On/70 Off Thermo Cube  120 On/100 Off Thermo Cube  Switchlinc On/Off - INSTEON Remote Control Switch (Dual-Band) 
    20 On/30 Off Thermo Cube  78 On/70 Off Thermo Cube  120 On/100 Off Thermo Cube  Switchlinc On/Off - INSTEON Remote Control Switch (Dual-Band) 

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