Model: YT4108-C keys list: start, stop, previous, next, west, east, north, south, stoop, Yang (signage text can be customized) system functional requirements Description: Each remote control system includes a transmitter, a receivers work the same venue, and will not interfere with each other at multiple sets. Receiver only 8 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.