A single LNB is a universal LNB with an output of a satellite receiver is connected. Through its affiliated coaxial cable is a universal LNB driven so that the entire frequency spectrum and both polarization can be received. When satellite reception, there are four schakelmogelijkheden for a universal LNB. Low band, high band (to be switched to 0 - 22KHz) and vertical and horizontal polarization (to be switched to 13V - 18Volt).
The Tri-control works on two alkaline batteries (type AA/LR06). These fit into the compartinent at the rear of the remote control. Remove the battery at the rear of the remote by pressing the tab key. Replace the batteries in accordance with the (+ and -) indications in the battery compartment. Close the battery with a lid. More on this remote, you can find in this pdf document.