T-H Marine Automatic Aerator Control Keeps your Bait or Catch Alive Healthy This aerator control provides a source of oxygen-rich water to your live well automatically. This unit features a solid-state timer with adjustable off times to adjust to varying conditions. Easily adaptable to existing systems. Simply connect wiring according to instructions provided. Front panel is 3 14 x 3 14 and requires only 3 behind panel. Will handle a high capacity pumps current draw. Features Turns Pumps On Of