Enjoy true Olympus or Panasonic LUMIX TTL strobe exposure via fiber optic connection with your compatible Ikelite DS strobe.With the RC1 TTL Receiver and a compatible camera with RC flash mode, actual exposure data is calibrated and communicated directly by the camera. This is far more accurate and consistent than "slave TTL" modes built into some underwater strobes which watch the camera's built-in flash and react. An individual RC1 TTL Receiver and compatible fiber optic cord is needed for each strobe. Use of two strobes requires two receivers. See strobe and cable compatibility information below.This product attaches to an Ikelite DS strobe. It is not intended to be attached to a housing and will provide no functionality if attached to a housing bulkhead. This receiver is not compatible with non-Ikelite strobes or non-digital Ikelite strobes.