Optical YS Converter/C2 for MDX enclosures
Product no. 50142

A compact unit that converts the camera's TTL signal into a light signal. The converter can be mounted on the camera's accessory shoe and can be connected to (an) SEA & SEA's flash unit(s) with Fiber Optical Cable(s) (*). TTL and manual mode can be switched by pressing the mode switch on the housing.* SEA & SEA's Fiber Optical cable II must be used with a YS optical converter.

Compatible housings: MDX-7D Mark II, MDX-5D Mark III ver.2 (with Canon EOS 5Ds or 5DsR).

Specifications
Operation: ON / OFF / TTL mode (indicated by blue light) / Manual mode (indicated by green light)
* The remaining battery level is indicated by a flashing LED light.
Auto power off: The converter automatically turns off if the shutter lever or mode switch is not activated for more than an hour.
* The converter can be reactivated by pressing the mode switch.
Power source: 2 x AAA battery (Alkaline: 3.0V / Ni-MH: 2.4V)
Power source: (* 1) Alkaline: 15 hours / Mi-MH: 12 hours (* 2)
Construction: Aluminium alloy (housing)
Dimensions (WxHxD): 54.4 x 39.5 x 53.3 mm / 2.1 x 1.6 x 2.1 inches (without cable)
Weight: 54 g / 1.9 oz.
* 1 Battery life depends on battery brand, temperature and frequency of use.
* 2 Operating time tested on 750 mAh batteries.

The video on "How to fit the YS optical converter into a compatible housing" has just been posted on YouTube.