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

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.

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.

At the end, it is all about how it fits your need. For me it was worth the money and I even bought another device like this for around the house. It ended up saving me time and allowed me to get value out of it from the start. The money was well spent, and the device performance is acceptable so far. In the past I was hesitant to buy these type of devices because of cost. I was lucky this device does what it advertises (long battery life, up to 1 year log storage, small size, and a commonplace AAA battery type. My use case is to track humidity and temperature for filament used for hobby 3D printing. I wanted to build the device myself (temp, hum, and pressure, all read over BLE, with an e-paper display and all!), but as time went by, I could not find the time to finish my 'project' within budget and hobby-time constraints. This device allowed me to start tracking filament use/storage life today, while I could still keep dreaming of my own device (because this product does not sense barometric pressure). Now that I use it, I dream of using a raspberry Pi to read this BLE device automatically (yes, adding another project to my pile of 'unfinished projects') My only downer so far is that the Android app does not allow me to save or export the data. It is not even available in the user space memory of the phone, so I can not easily extract it from the app. While I can see the plots in the app, I want to be able to save all the data to a file for later comparison. I will need (yet) another project of mine to use a Raspberry Pi to read all the data and save it. It would be nice if they update the app to at least save all the data to a file in the Android app folder, so we customers can copy it. Hope this experience helps others. For some of the comments I read, I think I know some of the answers: - The location access the app needs is because Google improved Android security awareness, and since Wi-Fi and BT/BLE scanning can be used to locate your device, the message will say 'location' because the app you are trying to use needs access to the BLE scan function to be able to find any of these sensors you own that are near your phone. - The 10s refresh-rate should be independent of the speed at which the sensor stabilizes to the exposed environment (response-time). I agree the manufacturer is pushing the limits of misleading by stating "10 s Fast Response" where 'response' and 'rate' are not quite synonyms. In any case, typically these devices take some time to settle due to lack of proper air flow, etc.

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.

Great product! I have bought three so far for different rooms and grows.

This is a nice little temperature and hydrometer. It is small just so you know. It's very functional and I have it on my desk. I trust thermopro because they know the business and I have several of their other products.

I got two of these so I could monitor the history with the app. Unfortunately, the app is mostly crap. Sometimes the app refuses to connect to the device. In fact, that happens almost every time and I have to sit and wait for a while for it to eventually connect. Also, when it does, the graphical chart is highly inaccurate. For example, inside the vehicle where I left one of the devices, the temperature in the vehicle never got below 80 degrees. But when I look at the graphical chart, it's showing a much wilder temperature fluctuation than what is actually real. Moreover, the humidity is all over the place. The graphical chart showing dramatic difference for something as simple as 1% difference between the two hours. It's quite poorly done. Worse, the app reminds you to update it every time there's a new update. Unfortunately, the update reminder stops the app from connecting to the devices, even if you hit cancel. So you have to manually connect them each time... else update. But what if I don't want to update? I hate updates and I hate being pestered to update things that already work well enough and I just want to be left alone.

It costs all the money, it's small, has a magnet on the back, it's accurate, and you can track temperature and humidity in real time, with an understandable app. The display is big enough. Looks elegant and will fit any room.

Muy buen producto, funciona muy bien.

Bought a few and was so pleasantly surprised how much I liked them, I purchased some more. Just a simple little thing but it works great, and even comes with a battery. The App that goes with it is fabulous too.. You can see all the info easily and can export it. A NOTE re: the BATTERY - for those ppl having trouble with the included battery not working, make sure you take off its plastic covering before use. It's really thin and hard to see that the battery even has a plastic cover all over it. Would explain why so many are complaining about it not working.

I am not able to connect my thermopro device with the application. The app is not able to search the device.

This little gadget is super handy and easy to use! It’s lightweight, making it convenient to carry around and check temperatures and humidity in different parts of the house. The app (I use the ThermoPro Sensor app for iOS) is simple and works flawlessly so far. App Highlights: * History Tracking: The app keeps a record of all measurements and lets you monitor multiple sensors at once (take a look at the app screenshots I captured). * Custom Alerts: You can set individual alerts for each sensor (both temperature and humidity) on your mobile phone or directly on the device. * Data Export: Export up to 2 years of data in CSV format (with readings every minute) – great for tracking or analyzing trends. Accuracy: I’m not an expert, but I compared its readings with other devices (see photos comparing a thermostat for temperature and a humidifier monitor for humidity). It seems pretty accurate for the price. Battery Life: I've been using this device for about a month, and the battery is still nearly full. One Small Issue: It doesn’t measure humidity below 20% very accurately and only shows 10% or 20%, with no numbers in between. Overall, it’s a great value for the price and does a solid job for everyday use!

Do not buy shows random relative humidity readings within a fraction of seconds.