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Alert System Type
Temperature / Humidity Alert
Sensor Type
Temperature / Freeze
Contact Closure / Relay
Ease of Installation
Beginner (Installs < 10 minutes)
Minotaur Engineering
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Temperature Sensor Closes Contact to Trigger an X10 Powerflash Module when Freezer Temperatures Rise
Freezer Watchdog
Freezer Watchdog
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What's Included
Freezer Watchdog - Freeze Sensor
Item# 71933
Price: Normally $49.99 
Hot Deal $27.50
Free shipping on orders over $175 - See Details


  • Sensor sits in the freezer to recognize temperature changes
  • Connects to a X10 Powerflash interface, sold separately
  • Can be used to trigger X10 controlled devices to alert you of a rise in temperature

Essential Info

Unfortunately, people rarely notice a dangerous rise in temperature in the freezer until it's too late, letting that freezer full of food go to waste! The Freezer Watchdog provides a way to sense inordinately high temperatures or the early failure of a residential freezer. Simply place the sensor in your freezer and carefully extend the wire leads out the freezer door through the freezer's weather stripping and attach the wire leads to an X10 Powerflash module. From there, you can have the Powerflash module send out X10 commands to other X10 controlled devices such as an X10 Lamp Module or an X10 Appliance Module to turn lights on in the event that the freezer's temperature rises to an unacceptable level.


What's Included

  • Freezer Watchdog
  • Owner's Manual
  • More Info

    The new Freezer Watchdog has a power transformer, automatic reset circuitry and better temperature sensitivity to ensure you'll receive an instant notification via X10 so you'll be able to begin rectifying the situation if your freezer fails.



    Manufacturer Product No.:FF47
    Dimensions:Sensor: 1 1/8" H x 1 5/16" diameter
    Connectors:2 leads, positive and negative

    Important notes:
    Defective exchanges for identical item within Manufacturer’s warranty period.


    What's Included       
    What's Included       


    11 Ratings
    5 star: 82%  (9)
    4 star: 9%  (1)
    3 star: 9%  (1)
    2 star: 0%  (0)
    1 star: 0%  (0)
    Average Customer Rating
    (11 customer ratings)
    Share your thoughts with other customers
    Larry Ullen -- henderson, Nevada   2/21/2014
    Worked well. Will get another.
    Phil Kemp -- san antonio, TX   5/25/2010
    Got one of these 4 years ago, installed it, and forgot all about it. Last week the light attached to an X10 appliance module that I had placed in my office went on. I couldn't even remember why it was there. I went and checked our outside freezer. Bingo, some ribs had shifted and left the door wide open. I would have lost all that meat and had a nasty cleanup if it wasn't for this set up. Robust, well made product.
    Shawn N. -- Folsom CA.   1/8/2010
    Works good. Would recommend.
    Paul -- cincinnati, Ohio   11/25/2009
    I have a small restaurant and used these in our commercial freezers in back. These work better than the expensive units we used to get and I can get the signal remotely. When you have multiple freezers, I can't tell which freezer is broken from the signal, but I know to check all of them when the light goes on in my office. Awesome and handy.
    Pat -- alamogordo, New Mexico   11/19/2009
    I have two of these and got them on a hot deal. I haven't been able to find them anywhere else. They work great and I received the 2 days after ordering. I am a long time Smarthome shopper.
    Joe E. -- coronado, CA   10/13/2009
    great product. Worked perfectly and delivered in 2 days. Awesome. I wished they had one for refrigerators!!!!!
    Amad -- el paso, TX   5/2/2009
    Good product. Very fair price.
    Scooter -- west palm beach, FL   4/3/2009
    I have 2 of these. The newer ones you don't even have to reset and work perfect! I can't imagine have a freezer without one. BTW quick delivery too.
    Roger -- santa clara, CA   3/12/2009
    I had a heck of time finding this on your web site but got one and it works GREAT! We have it in our garage freezer. I wish I would have known about it a year ago.


    X10 Powerflash Interface  X10 Lamp Modules  3-Pin Grounded Appliance Module   
    X10 Powerflash Interface  X10 Lamp Modules  3-Pin Grounded Appliance Module   

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