Water Tank Temperature?

Hi,

I am kind of new to this home automation thing, but i got the basic things covered i guess.

I am buying the SmartThings Samsung hub to control lights and power outlets. Thats fine and its very straight forward.

I am having trouble finding a zigbee / zwave water temperature sensor that i can connect to my SmartThings Hub and monitor the temprature.

I found this:

which i assume connects to a ZigBee device (DS18B20) that can communicate the temprature to my Hub.

Can you please confirm if my understanding is correct? If so, any details on how this can be done? If not, appreciate your input on how i can read the water tank temperature on my SmartThings hub.

Thanks
JS