Cheap Wireless Temperature Sensors for Europe (Austria)

Hardware
1

Hi,

I am searching for cheap temperature sensors (to measure room temperature in a house) which is available in Europe/Austria.

I saw different option, but still not sure, what would be the best decission. They should be of course cheap, because I have many rooms :slight_smile:

Option 1: Xiaomi Aqara
I am not sure how reliably they are and what they want to send to the cloud and i am also not so happy that they have no EU Plug.

Option 2: Z-Wave
Looks interesting, but If I am not wrong the cheap temperature sensor is not supported, only the 5-in-1 Sensor (Fibaro) ?

Option 3: JeeLink dongle with Technoline temperature sensor
This seems really to work. Disadvantage is, that it is limited to temperature only, and the communication is alsways going from sensor to dongle (no repeater) which could be tricky in a bigger house.
And they are not stylish :slight_smile:

At the moment I would vote for JeeLink. What do you think? Any other options?

Br,
Johannes

2

I use ESP8266 with a DS18b20 temperature sensor for mine. Total cost is about $5-$6 each and its super simple

This guy uses a slightly different sensor, but its still the same

3

Mhh, interesting,

So I could use an ESP8266 with ESP-Easy (for easier configuration :slight_smile: togehter with an supported sensor and hook it up with homeassistant via MQTT (over WLAN).

But then I would also need a case with battery.

4

i wouldnt use esp with battery.
i know that there are many projects that use sensors with batteries, but if you can avoid batteries i would advice that.

i use esp’s and arduino’s for all my sensors (with mysensors)
but all connected to a 5V adapter.

batts can go empty pretty fast, and most people that i saw trying to use batteries need to programm really carefully and the sensor update cant be that often, or the bats go empty to fast.

a case for and esp/arduino sensor can be anything you like.

5

I am with @ReneTode. ESP is not a good candidate for battery powered, but I too use them for many sensors. I really like them.

6

if you want to go for sensors with battery, then here they explain how to go.

they have a long experience with users trying to use battery powered sensors.
for me with 50 or more sensors it is no option at all, even when they can go up to 1,5 year.
i would go mad, keeping my eyes open to check which batteries need to be changed.

7

I have just setup just this with a dht22 temp humidity sensor and a light sensor on it. It seems pretty nice and easy to setup.

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