Locomotive controller. The unit has access to 80 locomotive and function addresses. Addresses are entered with a 10 button keypad. The unit has a two-digit display of the locomotive address currently called up. The unit has on and off buttons for the locomotive auxiliary function. The Control 80 f has 4 combined on/off buttons for auxiliary functions. The status of the auxiliary functions is shown by LED's. The Control 80 f has emergency halt and release buttons. This unit can be connected to a Control Unit or another Control 80 f. Dimensions 135 x 120 x 80 mm / 5-5/16" x 4-3/4" x 3-1/8".