The Nisha RFTAC AC Radio Flash Trigger Set is a 4 channel radio release system designed for studio use. The receiver is powered by your studio's AC current via a male IEC connection. Interface with your flash is accomplished via either a female IEC plug or 1/4" phono plug. Elinchrom to 1/4" (6.35 mm) female phono and mini to PC cords are provided as well as a phono to mini-pin adapter. The transmitter operates wirelessly via a shoe mount.