The Duplex version of the UT4 will be the same simple, easy-to-use utility throttle that you have come to know and love. These cost effective, simple to use throttles let everyone visiting your layout run trains! Large knob for speed control and 3 position toggle switch for direction control and braking. Dial in 4 digit addressing. Use with any LocoNet System. Controls Functions F0-F12 - It does not have extended function (13-28) capability. A UR92 connected to LocoNet is required for Duplex Radio communication.