The FR‑WR sync terminal can be used to connect commercial flash units, such as a monoblock flash, which can then be remotely fired. As is the case with the FL‑700WR flash, a dust‑, splash‑, and freezeproof (‑10°C) construction allows use in a variety of fields. With the FR‑WR charging completion indication emits an an electronic sound, when flash charging is completed. \nGroups and channels can easily be set and checked with dials on the FR‑WR.\n\n- Charging completion indication\n- Dust, splash & freezeproof\n- Quick configuration via dials\n- Wireless Receiver to control multiple flash units remotely from the camera\n- Enables versatile wireless flash photography