ThermoPro TP53 Hygrometer Humidity Gauge Indicator Digital Indoor Thermometer Room Temperature and Humidity Monitor with Touch Backlight

After accidentally ruining my old glass analogue thermometer when I left it in my solar dehydrator and it got too hot (it had a range up to ~60 °C), I was in the market for a new one. Initially I only intended to get another glass analogue one, but after some investigation, a digital one seemed like a good idea for a few reasons: most models seem to include a hygrometer (to measure humidity) and they can show you the maximum and minimum temperature and humidity in the past 24 hours. After some research, the ThermoPro TP-55 came recommended and seemed like the best option. I was about to settle on it when I noticed a similar model – the TP-53. Comparing the two, this really seemed like the better model to me, as it’s more compact because the °C/°F button and the 24hr/all time buttons are on the back of the unit rather than on the screen. This means that the TP-53 doesn’t have (and doesn’t need) a touch screen like the TP-55, and these two little-used buttons are relegated to the back of the unit where I think they belong. I mean, how often are you going to be switching between °C/°F? You’ll press it once based on what your country uses and that’s it. Similar with the 24hr/all-time button – you might check it once in a while but that’s it. No need to have these buttons on the main screen taking up screen real-estate.
From what I read, the accuracy and range of both the TP-53 and TP-55 is the same, or at least very similar. For the thermometer, from the ThermoPro website, -50 °C – 70 °C range with an accuracy of ±1.1 °C (±2 °F) (which doesn’t seem great to me, but I’ll live with it). The weird thing is that their website also specifies an accuracy of ±1 °C/°F for the TP-55, but this doesn’t make sense as the gradation of one °C is about twice as big as one °F, which would mean the accuracy for the TP-55 is either ±1.8 °F/1 °C, or ±1°F/0.56 °C but ± 1.0 °F/°C cannot be correct (I would like the company to clarify this, as if it’s the former, the TP-53 and TP-55 have the about the same temperature accuracy, but if it’s the latter, then the TP-55 has twice the temperature accuracy as the TP-53. For the hygrometer, the TP-53 has a range of10-90% relative humidity, with an accuracy of ±2% between 30%-80% RH, and ±3% outside of that range. If this is true, I’m okay with that humidity accuracy and range. And with a temperature range up to 70 °C, I should be able to sit it in my solar dehydrator to measure how warm it gets in there.
The light on this model is also easy to activate with a touch-button on the front at the bottom of the unit, and I prefer the orange lighting to the blue lighting of the TP-55. One you press the light button, the screen lights up until you press the button again, or 15 seconds – whichever comes first. This works well.
I’m using this thermometer in the living room, where it’s measurements help us decide whether to leave doors closed or ventilate or switch a fan on or cook something in the oven etc. It’s heading into winter here in Melbourne and I love being able to walk out in the morning and see the minimum inside temperature overnight. In summer, it’ll be good to see how how high the temperature got during the day.
I can’t comment on the accuracy of the hygrometer as I don’t have another hygrometer to compare it to. But I’m assuming it’s roughly correct. It’s good to see how cooking in the kitchen affects the humidity, or how a dropping temperature increases the relative humidity (as cooler air holds less moisture than warmer air), and when we are approaching the dew-point (when the air is fully saturated). We have a bit of a mould-problem on our ceilings during the cooler months, when the warm air inside touches the cool ceiling at night and moisture condenses on it (because there is no insulation in the roof). This device will be useful for managing our mould problem.
So far, no issues at all, except when I touched the screen while peeling off the plastic when I got it, the display went a bit funny temporarily. The device was really easy to set up and use. I’m hanging it on a nail, but it also comes with a magnet which to me seemed plenty strong enough, as well as a little stand if you want to sit in on a flat surface. And for AU$17 (AU$3 cheaper than the TP-55), it seems like a bargain. I registered online for a 3 year warranty (instead of a 1 year warranty), and hopefully if there’s any issues, I’ll be able to exchange it (as I read in other comments that other customers had difficulty with this). Would recommend.

Great little unit, I have several of them now.

Saw something similar at a friend’s home. Worth buying for every home.

Though bit expensive (2k), but good quality. Solid build, big letters; as per specification.

Fast delivery with prime and the device works well as expected!

Idea size with digits that are easy to read. Neat backlight. I liked the fact that it does not have a clock. Good value for the money.