ThermoPro

ThermoPro TP357 Digital Hygrometer Indoor Thermometer of 260FT Bluetooth Thermometer Humidity Meter with Smart App Room Thermometer Humidity

303+ bought in the past month

$9.99$15.99

About this item

  • Face icon comfort indicator: Humidity meter features face icons to indicate DRY/COMFORT/WET air condition quickly to notify you to adjust your humidifier or dehumidifier accordingly
  • 260feet/80meter Enhanced Bluetooth range: Thermometer indoor outdoor contains an enhanced Bluetooth Technology to produce a stable, reliable 260feet/80meter range (no obstructions) to ensure you'll always have full home coverage to monitor the temperature and humidity within your home
  • High accuracy: Indoor thermometer/hygrometer digital humidistat is highly accurate for both temperature and humidity readings (+/-1 Fahrenheit/Celsius and +/-2%)
  • Smart App with Alerts: Set a temperature gauge range via the ThermoPro Sensor and instantly receive a phone notification if the temp and humidity monitor levels fall outside of your range, allowing you to quickly react to make necessary adjustments; Have a private and secure App! ThermoPro App do not register user information, which further protects user privacy
  • 1 Year Data Storage with Data Graph: Home temperature monitor displays an easy to use smart thermometer graph with Maximum 1 year time period so you can analyze your home's historic temp and humidity data without registration
$9.99
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Product details

ColorClassical Silver
BrandThermoPro
Product Dimensions3"W x 0.2"H
Item Weight35 Grams
Battery DescriptionAlkaline

Technical specifications

colorClassical Silver
brandThermoPro
product_dimensions3"W x 0.2"H
item_weight1.23 ounces
battery_descriptionAlkaline
lower_temperature_rating32 Degrees Fahrenheit
mounting_typeWall Mount
operating_humidity10%-99%
upper_temperature_rating140 Degrees Fahrenheit
voltage1.5 Volts
temperature_accuracy0.5
temperature_reading_accuracyplus_minus_1_degree_fahrenheit
manufacturerThermoPro
item_model_numberTP357
batteries1 AAA batteries required. (included)
best_sellers_rank#2,212 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #18 in Indoor Thermometers

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Customer reviews

4.48,790 ratings

Customers say

Customers find the thermometer works well, particularly for monitoring greenhouses, and appreciate its accuracy, with one noting it's accurate within 1 degree.

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Fantastic little device for tracking temperature and humidity in your greenhouse.

Greywulffβ€”November 15, 2025βœ“ Verified purchase

I was kind of skeptical this would work given the price but it is amazing. It tracks the temperature and humidity in my greenhouse. I can check it from inside the house. It has allowed me to fine tune the heating in my greenhouse by monitoring temperature fluctuations over the course of the day. It is easy to use, was relatively easy to connect to my iPad (I suggest doing the initial set up with your phone, tablet or computer in close proximity. After that you should be able to check it from a distance.) The signal can’t be accessed from the front of my house (which would require the signal to pass thru a wooden greenhouse wall, an external porch wall and an interior house wall that is tiled) but if I move within about 20 feet in my house, it will update with no problem. For the price and functionality, I am very happy. It’s been running for about a month and has used less than 1/2 the battery, which given that it continuously tracks temperature and humidity, seems pretty good. It sits on a shelf in my greenhouse but also has a way to hang it from a nail or hook. Read more

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Excellent longlasting product. Stellar cust service.

RSβ€”May 26, 2025βœ“ Verified purchase

excellent product. accurate. versatile. durable. longlasting. bluetooth range is great. i can see the temp on my ground floor, sitting in the basement. the temp and humidity alerts are invaluable. the charts and data export features are also very useful. i greatly appreciate that i can use rechargeable AAA batteries in this thermometer, and that it's not outfitted with that dreaded custom lithium battery that lot of electronics makers use that render their product a one-time use, disposable product. i've owned several thermopro thermometers over the last 5 years or so, with previous versions of the tp 357 and also their cooking thermometers. they have all performed flawlessly over this period. no issues at all. i'd give this company 10 stars for product longevity if i could. this product's excellence is only matched by the company's stellar customer service. the luxury of being able to speak to a live person in customer service is a rare one these days. but not only do you get to speak to intelligent, informed, technically proficient and friendly customer service people at thermo pro, they are very easy to reach - (no long hold times or complicated automated phone routines). oh btw the company is based in the US, as is the customer service which is a total bonus. in this day and age, its almost impossible to find longlasting, durable products. and to actually have easily accessible, responsive customer service too.... is just icing on the cake. Read more

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Best temperature sensor!

MrSoxFoxβ€”August 1, 2025βœ“ Verified purchase

I love this TP357 temperature sensor. It is so much smaller than I expected though. I've had other versions in the past that were larger, so I think I was just expecting those sizes. I actually like how small this is. Seems perfectly efficient to show what it does in the small size. The other models have larger screens that show max and min data if you want that at first glance, but I just go to the app for the history. I also love that it has a magnet on the back in addition to the little kick stand. I used to have the old school versions with no Bluetooth, and would never go back. It's a game changer to be able to have a real time history of the temperature changes and the Bluetooth connection allows for quick review of all the data in the app. You can also export the data quickly and easily. The reason I love this one over the other new ones with Bluetooth is that it displays the temperature prominently on top and is also a larger font size display than the humidity number below. The TP359 version seems nice enough, but I hate that the humidity is displayed at the top. I constantly have to look twice because I naturally look at the top number expecting temperature. I don't know anyone that cares more about humidity than temperature. The temperature should always be the number displayed at the top of the display and I hope they update their other models to do this as well. Read more

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Great Value!

Alexisβ€”December 12, 2025βœ“ Verified purchase

I live in the humid south and have really temperamental sinuses. I bought this so I can keep an eye on the humidity in my room, as I sleep with a humidifier on most nights. I need to know when I've got to use my dehumidifier to bring it down, and this helps me keep humidity at my ideal level (around 50%). It is accurate, as my dehumidifier will tell me the humidity in increments of five and they seem to line up. It's small but easy to read-- I keep it on my nightstand. My only complaint is that the little faces disappeared from the display after only about a month of owning it. That doesn't affect functionality, of course, but it does kinda make me sad. I thought they were cute and I liked seeing the little smiley face when the humidity is ideal. Overall, it's a cost-effective choice if you need to monitor humidity/temperature in a room or area. Read more

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Great monitor, worth the purchase!

Carlβ€”February 3, 2026βœ“ Verified purchase

This is a great option if you need to check your blood pressure as I was requested to do by my doctor. I test every morning and it seems to be working as desired. I love the Bluetooth connection to the phone app so it keeps the history and data I will be able to show during my next appointment. Quality seems good and so far it is working for quite some time on the first set of batteries. Read more

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they work, magnetic and not obtrusive. bluetooth and their thermo ap lets you monitor with phone/tab

stumpedIβ€”January 29, 2026βœ“ Verified purchase

got the two pack (wanted more) bluetooth connected to tablet. i can monitor temp in bathroom (for warming before shower) and places humans live. i could use 2 more .. one for cellar and garage. Read more

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