Add wireless functionality to your studio flash's capabilities with the RFS 2.1 Receiver from Broncolor. This receiver eliminates the need for wired communication to enhance your work in studio or in the field. It has impressive ranges of 164' (indoors) and 656' (outdoors). Use it with Broncolor or other brand's packs or heads by adding a separately available RFS 2.1 transmitter. The receiver connects through the 2.4 GHz frequency to limit interference, as well as access to 40 channels and 99 groups so that it won't be accidentally tripped by nearby photographers. It provides local buttons to adjust the output in full stop or 1/10 stop increments and is equipped with a backlit LCD for checking and changing settings. Broncolor includes a CR2450 battery, a sync cable, and other essential accessories for your convenience.