As might be expected from this company operates the heater reliable. The temperature setting is not always exactly the values on the scale agreement, but that one finds so out quickly.
So first of all I have to agree with another review that the picture is wrong. It is only on the device and + - printed characters, but not the numbers ° C. In my case it is a little worse, the heater does not heat up and you can see it from time to
The heater is well made and is easily installed in the aquarium We have this rod as a second rod for our Aquarium brought so that the temperature is kept constant which has previously worked not so good now but super with minimal fluctuations we are
The heater is not as shown on the package, printed a temperature classification (with my old broken that was so). Only a plus and minus. So you have to touch to the desired temperature. Otherwise, it is serving.