The Olympus FR-WR Wireless Radio Flash Receiver is designed to be used with the Olympus TTL System. Enabling you to remotely trigger and control flashes, with a range of 30m and operate one of 15 channels within three groups.
The Olympus FR-WR Wireless Radio Flash Receiver features a hot shoe at the top of the unit and a cold shoe at the bottom for attaching to your camera. Also dual rear dials for channel and group selection.

Additionally, the Olympus FR-WR Wireless Radio Flash Receiver also features a PC Sync Terminal for wired pairing with strobes.
Also, the unit is dust and splash-proof, furthermore, it is freeze resistant as well.