The Impact SF-AE80 AC Transmitter/Receiver 3-Flash Kit includes three AE80 AC receivers that screw into the provided umbrella sockets or any household fixture. Two umbrellas have been provided, as well as three 6' light stands to support them. Since each flash can be used as either a transmitter or receiver, a sync cord is included with each flash in the kit to trigger your transmitter flash from the camera, which will in turn trip the other two SF-AE80s. This lightweight, flexible lighting setup is appropriate for just about any type of photography.
When the SF-AE80 is combined with socket SP-UM, the 3.5mm sync cable is compatible only if the reflector lock nut and spacer are removed from the socket.