Overall rating: 4.7192984 / 5 from 57 reviews.
AI Generated Review Summary
The Thermo-Hygrometer RT817E offers a large, easy-to-read display for indoor and outdoor temperatures and humidity. Customers appreciate its readability and professional features, though feedback on the humidity meter is mixed. It includes a remote sensor and is easy to mount or stand on a desk.
Summary topics
- Display Readability: 11%
- Overall Unit Satisfaction: 15%
Review topics: [value, display, control, works, setup, price, unit, numbers, hygrometer, reading, humidity, thermometer, temperature, instrument, sensor, font].
Review highlights
- "Nice large display, accurate, versatile, great price has all the features i need." —
- "The numbers are easy to read and works great for indoors." —
- "Love the large display!" —
Reviews
Love my new thermometer
"We live in interior Alaska and this has been an extremely cold December (2025). My digital thermometer would only go to -40 and our dial thermometer froze at -38. We were going to wait till spring to set it up because our windows are all frozen shut, patio door too. But the temperature kept getting lower so we put the sensor in a Christmas tree on the front porch and hung it near the front. The coldest temperature weâve seen us -51. 6. Weâre supposed to hit -60 Sunday. Thanks for creating a thermometer that measures real temperatures in hard places!"
Easy to read and performs
"Easy to read and performs exactly as intended in a greenhouse."
Keeps my orchid collection happy!
"I have two of these in use in my orchid growing area to monitor temperature and humidity. The units are in opposite corners but are in close agreement with each other (some variability expected due to size of area and air movement, etc. ). They have helped me improve health of my plants."
A very reliable thermometer
"Works like a charm. It replaces our old mercury thermometer which was hard to read especially in the evening and during the winter."
Love the large display!
"Love the large display! I use this for my mini-fridge. It's perfect!"
Probe / Temperature / Humidity
"It would be fantastic if the probe displayed both temperature and humidity. I make various ages meets, salami, etc. It would work extremely well if it had that capability."
Temp on bottom
"Works great but from a design standpoint my expectation is the temperature should be on top."
Great but without legible instructions.
"It works fine but I could not get started because the text giving directions is in such small print and in white on a shiny silver background so it is very difficult to read. Impossible for me. I had to call to be told how to make it work, which was ridiculously easy, but without instructions was not easy at all. Since I did not need any alarms, I just did the following. 1. Removed the plastic cover. 2. pressed the F/C button in back to select Fahrenheit. 3. pressed the power button in the center of the front. 4. inserted the probe and waited for the temp and humidity to register correctly."
Nice big numbers
"The numbers are easy to read and works great for indoors. The outdoor probe is nice, but you need a hole to put it through and doesn't work well with storm windows. It would be nice to have a probe that works remotely."
Great value, accurate,
"Great value, accurate,"