WiFi Temperature Sensor Smart Thermometer: Digital Temperature Monitor Gauge with Waterproof External Probe, App Alert & Buzzer Alarm, Rechargeable Battery, for Freezer, Refrigerator, Fish Tank

I'll start this review with a warning: I am a geek and don't apologise for that. We have recently moved house and have an air source heat pump and sometimes the hot water seems tepid instead of hot. I wanted some way to monitor the water temperature in the hot water tank 24/7 and this promised to do exactly that. The setup was easy: install an app, pair the device with your phone, connect to the home WiFi and it was working. I installed it in a stat pocket in the tank (designed for this exact purpose) and it all works. The probe goes into the pocket and the meter attaches to the tank magnetically. It has a very obvious and bright red display (no problem for me as my water tank is in the garage but if this were in my bedroom at night it would drive me mad). It all couples to the Tuya IoT platform so I can actually monitor it myself and control other parts of the system based on its output.

Needed a WiFi based sensor that didn't rely on batteries for a freezer temperature alarm. This has a good clear display and also works with Alexa. I already have a Tuya smart hub, so it installed easily. Could do with a longer power lead though.

I brought this as I wanted to remotely monitor the temperature of my hot water tank.Easy to install, worked first time and temperature seems to be reasonably accurate.Paired it with “Smart Life” app and now I can see the tank temperature remotely.Important note, that this unit does require an external power supply for continuous operation.

This works exactly as I wanted. I have a hot water tank in a remote location and want to keep an eye on water temperature in the tank. I added the device to the local wifi (very simple!), inserted the probe through the insulation so that the tip was touching the metal tank, and off we go. It's been working perfectly for a while, showing trends. Just as I wanted. The app interface is OK and allows me access to graphed data which I can download if I so please. My only suggestion: allow me to turn off the red circular light.

We’ve got a pressurised hot water tank fed (over quite a distance) from an LPG boiler. There was no way to really know if the water was hot enough (or how much of it) for a bath or shower, without running the tap for ages and finally deciding yes or no. The internal thermostat could call up hot water, but having this on 24/7 is excessive when on LPG. And doing timers always seemed to not work out for us.I’ve fixed the probe of this device to the tank metal about midway up (seemed to be a good compromise to detect the hot/cold boundary) and run some experiments to work out what readings were relating to what level of hot was present. When a shower is called for, we now simply ask Alexa how hot the tank is, and to boost Hive as required. Easy and saves the family double heating or running loads of water to see if it’s warm or not. Already helped on the bills.

I’m setting up the device and connecting to the app. It’s impossible to dial in the high and low temperature as you scroll through the different temperatures it reverts back to the original temperature within seconds. It’s a bit like a game trying to keep up with it but you always lose you just can’t get it to dial inSo unfortunately I will be returning it which is also a problem because I’m having to pay to get it posted back to Hong Kong

Easy to read, nothing in instructions about charging or battery life . That's all

I liked that is small, with a bit of autonomy/battery, but after about 3 weeks it started going offline every now and then.Now is completely offline and I doesn't want return. Unfortunately the unit is in another country and I can't return it.