I have the thermostat for about 1 month. It is very good overall, but it does not display temperatures for you to choose. It requires an external thermometer in the aquarium and you have to check the temperature you want to achieve and turn the lever right or left to decrease or increase the intensity. I have set it to 26 and it has stayed there, it is very good and comes with glass protection. Made in the Netherlands. I have no complaints. It is normally for a 200-liter aquarium, but I have it in a 70-liter one.