Model: YT6112-C keys list: start, stop, previous, next, west, east, north, south, Yang, stoop, L, D, spare a spare two (signage text can be customized) system functional requirements description : Each remote control system consists of a transmitter, a receiver, and sets to work at the same venue will not interfere with each other. Only 12 receiver output switch, no power output. Function keys are jog mode, press pass, loosen off; can also be customized into self-sustaining mode, press pass, then it is off. Interlock between any two function keys. Receiver output switching capability: AC250V 5A, DC30V 5A. Receiver Operating voltage: DC12 / 24 / 48V, AC36V / 48/220 / 380V.