0681035241554

General Tools

Model DTR900

Internet #202835804

Indoor/Outdoor Thermometer with Min/Max Memory

$24.77 /each

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Product Overview

Since 1910, General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. The General Tools DTR900 Inside/Outside Thermometer with Min/Max Memory can display inside and outside temperatures simultaneously, along with the time and date. It is ideal for walk-in refrigerators, reach-inn boxes, greenhouses and household and lab applications.

California residents: see   Proposition 65 information

  • Simultaneously displays the time and indoor and remote probe temperatures or the time and date and the remote probe temperature
  • Stores and recalls minimum and maximum indoor and remote probe temperatures with time and date stamps
  • Measurement ranges: 14° to 122°F indoor, -40° to 176°F outdoor
  • Measurement accuracy\resolution: ±1.8°F / 0.1°
  • Display size: 2.53 in. x 0.91 in.
  • Fast response
  • 6.5 ft. long waterproof exterior sensor cable is thin enough to fit under a window
  • 1 switch selects °F or °C temperature unit and time and date format
  • Mounts on a wall or a flat surface

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Customer Questions & Answers

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Customer Questions & Answers

Indoor/Outdoor Thermometer with Min/Max Memory
Indoor/Outdoor Thermometer with Min/Max Memory

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Min/Max History

This question is from Indoor/Outdoor Thermometer with Min/Max Memory
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Peoria, IL
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September 1, 2015
Most of these reset min/max daily. Looking for a unit that will record and retain all-time min/max (inside and out) until reset manually. Want to use over the winter in an unoccupied off-grid cabin to see how well the insulation and passive solar are working.
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Answer (1)

September 4, 2015
Answer: 
Thank you for your recent inquiry with The Home Depot. This unit will hold the minimum and max temperature since the time the battery was installed or it has been reset. This item is currently in stock online. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376. Thank you for shopping Home Depot.
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Customer Reviews

Rated 4.0 out of 5 by 12 reviewers.
Rated 4.0 out of 5.0 by General Indoor/Outdoor Thermometer Using to monitor temp in an air space between a stove pipe and the wall, and the wired remote sensor works well for me. Thermometer Inside and Outside have 1/10 temp readings, thats kind of nice and this Thermometer serves its purpose! It also has a table top stand or wall mount! Cons: a little pricey for what it is, no back light and to reset time/date you have to pull the battery! I have not had any problems with it and would recommend it to others. November 11, 2014
Rated 4.0 out of 5.0 by good product Easy to set up and use. Like that you can look back a few dates to trend templs August 20, 2014
Rated 4.0 out of 5.0 by Looks good and it works I use it to measure the temperature of a chase that contains water pipes and tends to drop below 32 degrees when the outside temperature gets below 12 degrees. I really like the feature that stores the minimum temperature with the time because that lets me know when there might be a problem with freezing. The controls are minimal and not obvious so read the instructions carefully. It works well for my application. February 12, 2013
Rated 5.0 out of 5.0 by Perfect for use in our small pharmacy refrigerator We must keep a log of the refrigerator and the room temperature for compliance purposes. This machine must also be capable of recording the last 24 - 74 hours. This is the perfect thermometer at a VERY reasonable price. April 10, 2014
Rated 5.0 out of 5.0 by good product I bought this so that I can find out the outdoor temperature from indoors. It seems to work well. The only thing I'd prefer is that the temperature display was larger. December 10, 2013
Rated 5.0 out of 5.0 by Bought this to see the temperature inside a room walled off from my forced air heater's thermostat. works great. I am able to view the temperature inside a room that I don't have access to just by drilling a small hole through the interior wall and setting the thermostat sensor inside the room and mounting the thermostat inside my family room so I can adjust my heater up or down depending on what that room's sensor shows. Wonderful product! January 3, 2012
Rated 1.0 out of 5.0 by Small display, inflexible settings The characters on the display are small and not clear when viewed from an angle. The unit can be set to C or F, but with C you also must get 24 hour time and dd.mm.yy - all US or all European (which may be okay for most people). I returned the unit. November 22, 2011
Rated 4.0 out of 5.0 by Adaptable to monitor solar hot water heating. Great for monitoring solar hot water heating system temperatures. With it, I can tell at what time all warm water in the storage tank has been used up. I can also see the maximum temperature reached during the day. October 4, 2012
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