What's in the box:

x1 ADA NA Control Timer II (50/60Hz)

NA CONTROL TIMER II a renewed model of NA Control Timer, is an essential need for the daily aquarium maintenance. Same as the conventional NA Control Timer, a loaded solenoid valve is opened to supply CO in conjunction with the lighting circuit when activated. As the light being turned off, aeration will be started. It makes timer set-up easier than the previous model, and also allows you to switch the frequency.
For the well-regulated daily maintenance of planted aquariums, ADA introduces NA Control Timer II, a sophisticated evolutionary design with aluminum exterior, to hobbyists.