[Raspberry PI] Wireless temperature measurement - battery sensors

Hello,
I searched the forum and found no answer to my question.

I would like to use Raspberry PI as a temperature recorder taken from wireless sensors with battery power,
I want the sensors to be wireless with battery power, which will not have to be replaced weekly.
I was thinking about ZigBee but I'm not entirely convinced about the way it works and how it works. ESP systems are also power-hungry.

As for the range, it would be great if the system worked with a range of about 10-20 meters, but including ceilings (storey house, range - basement - floor).

Temperature measurement could take place every second, but every 5-10s it is enough.
It would be nice if there was a possibility of two-way transmission (e.g., informing about the alarm at the sensor itself), but this is not required for me at the moment.

What is both good, price-friendly and energy-saving for such applications today?

PS Raspberry Pi due to greater possibilities, e.g. a web page server on which I want to display charts + home print server + DLNA etc. ...

To what extent do you want to measure this temperature and with what accuracy?
Measuring every second makes sense only with a thermocouple. Only she can have a sufficiently low thermal inertia.
See if iNode sensors will match.

Of course, I forgot the most important.

I would be interested in measuring temperatures from about -40 * C to 125 * C, accuracy of 0.5 * C even 1 * C calmly enough.
Indeed, iNode sensors look quite interesting - thanks for the hint.
However, I am concerned about the issue of the range of iNode sensors. Will Bluetooth 4.0 be able to break through two floors or even one?
I will add that the range from the wi-fi router reaches from the floor to the basement.

And what could the simultaneous support of 8 iNode devices in Raspberry look like?

As for the theory, the legally permissible WiFi power is + 20dBm. In free space, a 6dB change in power causes a range change twice. The devices I mentioned have a maximum power of + 8dBm.

There are BLE sensors with + 20dBm transmitter. However, they must be powered by a larger battery and are more expensive. From a long distance you can only receive data from them. No typical PC / tablet / smartphone has a BT interface with such power to provide two-way communication.

Two methods of data transfer are used for BLE sensors. Connectionless in broadcast and connection frames.
In the first method, the sensor periodically sends data and does not care if it reaches somewhere. Each device with scanning enabled receives broadcast frames from all sensors within range.
In the second method, the connection between the devices is established. The sensor knows if someone is receiving data and can send it relatively quickly (several dozen times per second). In BLE, you can simultaneously connect to several devices.
The first method is good e.g. for measuring the air temperature in the room and the second e.g. for measuring the PCB temperature during soldering.

Thanks for the answer,

I understand BLE by short for Bluetooth Low Energy, I have searched for a lot of such sensors, but most of them are from Chinese websites. Is there any company from which you could order it, so to speak, without waiting for months to ship?

In the case of BLE, the first method would be the best in my case, i.e. in broadcast frames.

Buster1994 wrote:

Is there any company from which you could order it, so to speak, without waiting for months to ship?

I wrote earlier to see if iNode sensors will match.