This is an Elinchrom 3.5 mm Jack to EL-Amphenol Sync Cord. It is 16' (5 m) long, and it is used to hardwire Elinchrom flash packs or monolights in cases where the units are too far-spread for the optical slaves to function. It may also be used in cases where your radio slave is ineffective, or not allowed.
For hardwire firing of two or more Elinchrom Style S or RX, Chic, Digital and Digital RX units.