Donner 4pcs Black DMX512 DMX Dfi 2.4G Wireless 3 Short Receiver & 1 Transmitter Stage Lighting Control Metal Black Shell. 7 groups ID code settable,User can use 7 groups individual wireless net without any interfere No time delay when signal data is transmitting, signal data is real time and reliably. This product adopts a 2.4G ISM frequency section. High effective GFSK modulate, communication design 126 channels jumping frequency automatically, high anti-jamming ability 7 groups ID code settable, User can use 7 groups individual wireless net without any interfere