The Marelux Lumilink, which can be installed on the fiber optic port of your camera housing, both encrypts and amplifies the signal received from your housing’s internal optical flash trigger. It then transmits it via optical signals. Capable of extending the range of optical signal transmission, the Lumilink has an effective transmission distance of 2m underwater and an optical signal emission angle of 160 degrees. Made of anodized aluminium alloy, it measures 82mm in width, 70mm in height, and 64mm in depth. Weighing 180g in air, it is depth-rated to 100m and uses a 10440 lithium battery.