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🌡️ Stay ahead of indoor climate—because comfort is the new luxury!
The ThermoPro TP357 is a compact, highly accurate Bluetooth-enabled hygrometer and thermometer designed for indoor use. It offers ±0.5°C temperature and ±2% humidity accuracy, updates readings every 10 seconds, and supports a robust 80-meter Bluetooth range. With a smart app providing real-time alerts, visual comfort indicators, and up to 2 years of data storage, it empowers professionals and families alike to maintain optimal indoor air quality effortlessly.









| ASIN | B093PT1NL1 |
| Battery Description | 1.5 volt battery |
| Battery description | 1.5 volt battery |
| Best Sellers Rank | 991 in Garden ( See Top 100 in Garden ) 3 in Hygrometers |
| Brand | ThermoPro |
| Colour | White-Bluetooth |
| Country Of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 8,237 Reviews |
| Item Dimensions W x H | 5.4W x 1.8H centimetres |
| Item Weight | 0.06 Kilograms |
| Item weight | 0.06 Kilograms |
| Manufacturer | ThermoPro |
| Mounting Type | Tabletop |
| Mounting type | Tabletop |
| Operating Humidity | 10% to 95% RH |
| Product dimensions | 5.4W x 1.8H centimetres |
| Temperature Accuracy | 1°C |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 60 Degrees Celsius |
| Voltage | 1.5 Volts |
A**Y
Excellent Bluetooth thermostats
⭐️⭐️⭐️⭐️⭐️ Excellent indoor thermometers – smart, accurate, and super easy to use I bought the ThermoPro TP357 (pack of 3) to monitor temperature and humidity in different rooms, and I’m genuinely impressed. The Bluetooth connection to my phone is seamless — the app pairs quickly and stays connected without any hassle. Being able to check readings straight from my phone is incredibly convenient, especially when the sensors are in different rooms. What really stands out is how much useful information they provide. You get clear temperature and humidity readings, history tracking, and min/max records, all laid out in a clean, easy-to-understand app. The displays on the units themselves are also bright and easy to read at a glance. They’re very easy to set up and use, even if you’re not particularly tech-savvy. Just pop in the batteries, pair them once, and that’s it — they just work. Overall, these feel accurate, reliable, and well-built, and having three in the pack makes them great value for money. Perfect for monitoring living spaces, bedrooms, grow areas, or anywhere you want to keep an eye on indoor conditions. Highly recommended 👍
A**R
Great thermometer. Exceptional quality. Superb phone app.
Bought a pack of 3. They work great, quality is excellent and are super simple to setup. Download the refreshingly good dedicate app to your phone, which provides clear readings and customisable history of temp and humidity. Each thermometer can be individually named in the app. The data can be conveniently exported from the app.
J**H
Small, accurate and the app works well
Really useful little device. It’s small enough to sit anywhere without being intrusive, but still gives clear and accurate temperature and humidity readings. The Bluetooth app is easy to set up and makes it simple to check conditions from your phone. I also like the alerts and the data recording, which is handy if you want to keep an eye on changes over time. Great for a room, office or anywhere you want to monitor temperature and humidity properly.
W**K
Good bluetooth temp meter. iPhone app works very easily. Battery lasted 5-6 weeks (only...)
I like the bluetooth function where my iPhone app can just pull the data. I use for my cabin hut indoor and outdoor. So I can monitor the overall temperature during the day/week. It helps to understand how the heating indoor is working, especially knowing how much it is affected by the outdoor temp. Battery: it just ran out. I started 7 jan and ran out 25 feb (for both units with the supplied AAA battery). So it seems like 5-6 weeks with every couple of days syncing with my app. It's a bit short, I plan to try to use 'better' AAA battery and see whether that makes a change or not. The downside is that it doesn't shows very well when the battery actually runs out. The temps seems to be good enough, it is similar to my other digital temperature meters that is part of my digital clock. The humidity and heat index seems unnecessary for my use case.
J**F
Excellent
Very good and easy to use and connect to the app. This is the second time I have purchased this item as I want to monitor the temperature in a second location. Very good price also.
L**U
Works exactly as it says it will.
Bought to keep track of temp in my camper during the summer, in the event that I have to leave my boys alone while, i.e. I have to nip into a shop that won't allow dogs. It connected straight to my phone via the free app and works really well. You can set an alarm to go off on the phone if the temp or humidity rises above the level that you set. I don't envisage using it much tbh, but, being a belt and braces person, it'll put my mind at ease, along with the 3 fans, bowls of water, and cooling mats we already have in the van.
M**R
OK product but BEWARE very poor battery life!!
These work fine and do what they say on the tin. However I have two minor gripes - firstly, it's a shame that they don't feed into Apple's Home ecosystem and you can only view the data in the dedicated app for them. Secondly, and more importantly, these devices EAT through batteries. I'm not really sure what's going on with them but 1 AAA battery barely lasts a month. Quite often I found myself looking at a blank display in disbelief that the battery had died so quickly! In the end, I have stopped using them simply down to the cost of constantly having to buy new packs of batteries. Shame really....
B**I
Looses Pairing But now Amended - Update
For the first couple of days I would have given these units a 5 star rating - see the update below, it’s now 5 stars -They are neat, compact, accurate and work well. I’ve put one in the loft and one in the study that we don’t use much at the moment to check on the temp and humidity. Both work very well. The app is good and easy to use but the pairing keeps failing. Once you switch off the phone/ipad the pairing is lost. It’s easy to set up again but a but annoying to do it every day. Update - after seeing the above review the seller contacted me (via Amazon) and asked for the details of the problem. The next day they sent me a message to say the app had been updated and if I deleted the app and reloaded it the problem should be sorted, and it was! The units are neat, compact, well made and accurate. The app is very user friendly and actually looks good too. I’ve switched off both the phone and iPad several times, including overnight, and the app pairs with the units straight away when switched back on, very pleased and I will now be buying another three units. This is what customer service should be, if I could give six starts I would.
Trustpilot
1 month ago
4 days ago