I have been using it for 2 years now and I am facing problems with the transmitter-receiver communication; it quite often loses contact even though there is not a large distance between them, and when it reconnects it is in off mode, so the house gets cold until I turn it back on manually. Its application is only for on/off, you can't do any customization at all. Wasted money and it's also expensive

Ancient thermostat with no ability for adjustments. Well, aren't we talking about recording operating hours and temperature?

As a thermostat, it has great accuracy in temperature readings and no disconnections in wifi. I should note that the wifi is from a router with a Sim card and not a strong signal. The only downside is the app that does not have full customization (you cannot set a daily or weekly program from your mobile, which is important for me). That's why three stars. If remote configuration is not important to you, it is a very good thermostat

I proceeded with the purchase of this specific product with a basic consideration, the ability of the thermostat to be moved to any desired space and for the operation of the burner to be based on the temperature in that specific space without the need for digging, and this is because the previous thermostat (photo) was placed next to the exit door, resulting in the burner igniting every time the door was opened. Another reason is the ability for remote operation, which works flawlessly through the application. The only problem is the installation, which requires knowledge of an electrician and a good reading of the instructions for programming it. From there onwards, it operates flawlessly with great accuracy in temperature indications.

The product is rubbish, it doesn't even have a light to see, and programming is not possible. It is also very expensive and not worth it

I'm coming back after two months. The problem with the wifi not working on the latest android versions, for which I had given a one-star rating, has been resolved. The company provided me with a beta version and now everything works perfectly. The wifi has been working flawlessly for two months without any interruptions in the connection. The device was very easy to install in place of a Siemens analog thermostat and it has been a great help. Congratulations to Olympia Electronics!

I have had it for two months and it works great, both on Apple and Android phones. I should emphasize that I use it for basic functions without daily, weekly, etc. programs. I was away from home for 20 days and adjusted it daily accordingly. Satisfied for now

One star only because I bought it around the 9th month of 2021, if I'm not mistaken, and I found out that the device, after the update to Android, doesn't support WiFi from the moment I got it on my phone, meaning it's useless. After contacting them via email, they told me that they will fix the problem in November by releasing a new version (update) that will be more complete and comprehensive because now, on my tablet, which is the only device that works, it only has the ability to increase or decrease the temperature without the daily, weekly, etc. settings... Now it's January 22nd, 2022, and still nothing. The last update was almost 3 years ago... Can you believe it? Other programs update regularly...
Other than that, it's very good. I have no complaints about other issues... I just wanted to support a Greek product...!

For ten months now, the wifi on their mobile phone has not been working. I have called numerous times and they tell me that they will fix it, but it still doesn't work for the reason I bought it

The thermostat is garbage. I bought it in 2018 and it only worked for two years before completely stopping. It's not worth the money, I bought it for 100 euros back then

I have Android 11. The app crashes on me. When you call the company, they politely tell you that the update will be done by the evening. This issue has been going on for 2 months based on the comments I see. It's a shame because the whole system is excellent, but the main function of the WiFi doesn't work. Another time I regret supporting a Greek company

It works very well and when there was a glitch with the application, the response from the company was immediate and the problem was resolved. We support Greek products when they are also of good quality.

Unfortunately, I will write about complaints even though I don't want to (Greek product). The WIFI for this year did not work at all. In contact with the company, they keep leading me from one date to another and I can't find a solution. They are also deceiving in emails. Unfortunately!!!!!!

Nice, although I would say the menu is outdated. It has accuracy in temperature as long as we don't hold it in our hands for too long. It has several settings on the main unit (Night mode, timer, away mode, etc). The mobile application did not impress me. It is very basic. Essentially, it only has on/off and temperature adjustment. It does not have a timer or the ability to see in real time if the thermostat is on. If I manually turn off the thermostat, the indication does not change in the application.

Update: Eventually, the indication does change in the application but there is a significant delay.

Update 2: After about a month of use, I have encountered some issues. The most basic one is the mobile application. On a Xiaomi phone with Android 11, the application does not work. Overall, the company needs to put in a lot of work on the application to be considered a worthy product compared to other companies.

It does a very good job and never disconnects, and if it disconnects due to a power outage, it immediately reconnects. The negative aspect is the very difficult menu because it requires intuitive abilities to navigate through it, as well as the menu on the phone which has almost nothing and everything needs to be adjusted from the device.

Having purchased the product for 10 days now, what I have to say is that it is worth its money. Easy installation (even without an electrician). Quick response (I have noticed a delay of maximum 2 minutes in command transmission) of the application.

Unfortunately, I have to rate it with the worst rating because for the past 1-2 years, it hasn't been working for the main purpose I bought it for.

The WiFi.

Whether on a relatively new phone (Xiaomi A3 Android 11) or an old phone (LG G4 - Android 6), the android app crashes or gives an error (certificate expired). Of course, I tried countless uninstallations/clearing cache, etc.

Strangely, it worked on a friend's phone that we tried, as well as on an android emulator. Unfortunately, though, it doesn't work on both of my smartphones.

I waited a long time hoping that the bug would be fixed, but nothing.

Update 5/2022:
Finally, we have an update on the android app and now it works properly.
However, it has a bug that it doesn't remember the login and you have to search for the password every time.
I hope they fix it soon this time.

2 years of flawless operation without any problems. You can move the thermostat to any point you want as long as it doesn't lose communication with the central unit. The only thing you need to be careful about is not holding it in your hand for too long because it raises the ambient temperature that the sensor reads and takes a while to adjust when you let go of it (5-10 min). Detailed installation instructions and immediate response and customer service from the company. Reconnected quickly to wifi after the summer period when it was disconnected from power. Reliable in remote activation/deactivation from the app, the application never crashed. Several operating programs, but I didn't use them.

I think that the menu is a crossword puzzle for strong solvers. With what others are writing, I'm starting to feel delayed. Otherwise, the thermostat is simply good

I hesitated to buy it as a Greek product. However, it works perfectly the one month I have it in the office. At home, I have the Netatmo, which does the same job for 180 euros, not to mention it has a small bug. The poor Greek from Aegina outperformed him! He gave me a little trouble during the setup, where I had to press a button on the board (ridiculous) to connect, but otherwise, it is very user-friendly and the response to smartphone commands is in seconds. Well done Olympia electronics!

Excellent thermostat! Very easy to connect, as long as you know the basics. It requires three cables to be connected, phase (L), neutral (N), and the return that gives the command to the burner (two returns if you also have a hot water boiler output). The mobile application is very good, although it could have more customization options. As for the temperature indication, it is extremely accurate. I checked it with 4 different precision thermometers, one of which was a meteorological one. The deviation is about 0.1 units, which is absolutely normal and dissipates within a few minutes.

Excellent! It works great. Accuracy in temperature, easy management from the mobile. Congratulations!

The thermostat shows random readings. At least 3 degrees higher than the other two thermometers I have, which show the same temperature. One digital and one mercury. There is no calibration option.
Very simple application, without programming capabilities.
The temperature synchronizes-updates in the app after about 5 minutes. Terrible performance.
The only positive is the differential, but what good is it if you have 15 degrees inside the house and your thermostat tells you 18.8.

Necessary for spaces where the thermostat needs to be moved and receive readings from other rooms. Easy installation, flawless operation, the ability to program the start of the boiler's operation (very good for professional spaces that are not used 24/7), the ability to activate heating remotely via mobile... Truly a perfect device and of course, I am proud that it is of Greek construction! Bravo to them!