The FJ-XR Wireless Receiver from Westcott gives FJ-X2m and FJ400 users the ability to add additional strobes or flash units to their setup by simply plugging the FJ-XR into any 3.5mm sync port on the preferred strobe or flash unit. This compact and easy-to-navigate unit eliminates the need for wired and optical sensor communication. The receiver connects through the same 2.4 GHz frequency as the FJ-X2m trigger and plugs directly into the 3.5mm sync port of compatible strobe or flash units. The integrated lithium-ion battery is recharged via a standard USB-C connector.