The uncoupler track comes with a manual hand lever and a built-in electric mechanism. It is compatible with most common European coupler systems. Length 94.2 mm / 3-3/4″. It can be used with all NEM couplers and with current close coupler systems. A light mast can be plugged into the uncoupler track as an uncoupler signal (Marklin 74997). The uncoupler track can be connected to a control box or to a digital decoder.