Convenient, lightweight, and compatible with all pack and monolight units (use of RFS 2 transmitter required)._up to 99 workstations, 40 coded frequency channels._Optional USB power supply input for battery-less operation._The Broncolor RFS 2 Receiver is an ideal way to eliminate PC cords while adding wireless functionality to your studio or work in the field. The receiver connects to Broncolor or other brand packs or heads using the supplied sync cord and optional adapter if needed. The RFS 2 has 40 discrete channels to choose from; more than enough to eliminate interference or overlap in multi-photographer events. 99 studio addresses are available. Besides a test button, the receiver provides power up / down buttons to regulate the output in full stop or 1/10 stop increments on flash units controlled by it. The easy-to-read LCD display shows channel, studio address and power status of the system._Specifications Weight: 1.27lb / 0.57kg Product Height (in): 3.35 Product Length (in): 5.31 Product Width (in): 5.31 Product Height (cm): 8.5 Product Length (cm): 13.5 Product Width (cm): 13.5 Warranty: 2 Years Channels: 99 Groups: 99 Wireless Frequency Band: 2.4 Ghz Wireless Range: 164 ft Indoors 656ft Outdoors Read More