Optical YS Converter/N1 for MDX enclosures
Product no. 50126

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 (a) SEA & SEA 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.

Specifications
Compatible enclosures: MDX-D810, MDX-D7100, MDX-D500
Operation: Power ON / Power 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 mode: The converter is automatically turned 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 / 5.4 oz.(Housing(s) compatible with optical YS converter / N1): MDX-D7100
* 1 Operating time 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.