The Hobby Aqua Cooler Control was specially developed for use in conjunction with Hobby Aqua Coolers and controls these precisely to the degree. The integrated sensor measures the temperature in the aquarium and also shows the temperature on the controllers digital display precisely to 1C. With an adjustment range of 10 - 40C and three programmable speed, levels you can adjust the HOBBY Aqua Cooler to your aquariums needs. Simply connect the Hobby Aqua Cooler Control via a plug connection (DC 5/2 mm) to the Hobby Aqua Cooler V2, V4 or V6, attach the sensor to any location within the aquarium, configure the desired temperature, and youre done!Hobby Aqua Cooler Control+ specially developed for use in conjunction with Hobby Aqua Coolers+ controls and measures the aquarium temperature precisely to 1C+ digital display makes it particularly easy to read and operate+ adjustment range from 10 - 40C and three programmable speed levels+ simply connect the Hobby Aqua Cooler V2, V4 or V