Online thermometers available to monitor the temperature in the cottage on the plot of land

I am looking for a thermometer with which I can check the temperature in the cottage on the plot via the internet. So that I can come if it drops too low and there is a risk of water freezing in the pipes.
From what I see there are some complicated fancier solutions. Do you know of anything cheap, ready-made, easy and simple to use?

Maybe type "gsm thermometer" into google, I see that they are 200PLN each.
I made myself based on SIM800L modem and Arduino, but it was a lot of work. And if you do not have paid internet on the plot, it is better to set up SMS communication and set alarms, because otherwise you have to buy a public IP or your thermometer will have to regularly send data to a server.
And so you send a query, you get an answer and in addition you have alarms that when sleeping below the threshold X it sends an sms.
There are several small operators with which the SIM card for a few text messages per month practically does not cost.

GSM thermometer nice idea, nevertheless I have the internet there working over fibre. I need to measure temperature at two or three points so I would prefer to fit in 100-200 zł for everything .

I use the wBox thermometer, but it works over wifi.

Michelson wrote:

I use a wBox thermometer, but it works over wifi.

And can you provide a model or link?
Wifi is what I have there.

Enter "wBox temperature sensor". On the portal, the price from £88. I have this sensor to monitor the CO temperature. It even works well. There is a graph in the app for viewing.

I use this type of sensor, the battery lasts half a year (sensor is located near the router) I once caught 2 pieces on promotion for 30pln (total)

Well but on the screenshot it says it needs a zigbee hub? So it won't connect the sensor directly to the wifi router?

I quickly pasted a picture from the internet and this is what I found
I mean this type of lozenge, on wifi there are also such.

search for "WiFi temperature" .