B&H Photo Video Pro Audio The Professional's Source 800.606.6969 / 212.444.6615
0 $0.00
Your cart is currently empty

You have 0 items in your cart

View Cart & Begin Checkout
What item is right for you?
Ask our Experts! 800.606.6969 Live Chat

Sea & Sea Internal YS Converter/C for the MDX-5D MkIII Housing

B&H # SEMDX5DM3YSC Mfr # SS-50124
Usually ships in 7-14 business days

Availability Details

This is a Special order item. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at time of shipment.
PayPal Orders
PayPal orders will be charged when the order is placed.
International Orders
International orders will be charged when the order is placed.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $534.95
International Export Disclaimer
Product Highlights
  • Improves System Ergonomics

The Sea & Sea Internal YS Converter/C for the MDX-5D MkIII Housing offers hardwired TTL strobe control. It is designed to be fitted inside the compatible MDX-5D MkIII housing to sufficiently enhance the ergonomics of the system. Dual bulkheads provide 2 sync cable connection points, whilst TTL Exposure-Compensation and switching between TTL and Manual modes are controlled from the housing. The battery power status can also be checked from the rear of the housing.

Up to 4 strobes can be used when 5-Pin Dual Sync Cables (sold separately) are used to twin up on each side.


  1. Only the same Mode strobes can be paired together.
  2. The Internal YS Converter/C should be installed by an official from the Sea & Sea service centre.

The accessory bulkhead connector (supplied with the converter) is fixed in a spare housing accessory port
LED that displays the remaining battery charge is situated above the viewfinder on the rear of the housing
Two strobe / mode selection switches (for left and right) are located inside the housing
A battery holder (for the CR2 lithium battery) is situated inside the housing
Compatibility Housing: MDX-5D MkIII Housing
Compatible Strobes with Housing: YS-D1, YS-110a, YS-110, YS-250, YS-120, YS-90xx, YS-60/N
Mode A: YS-D1, YS-110a, YS- 120
Mode B: YS-250Pro
Mode C: YS-90DX, YS-90Auto, YS-90Duo, YS-60/N
Mode D: YS-110
Power Lithium battery CR-2 1
Please Note:

The supplied CR2 lithium battery is for testing purposes only. Replace it with a new battery if product performance is inadequate.

Operation Time Continuous Operation Time: Approximately 24 hours (based on the normal room temperature of 77°F (25°C) , until the power lamp flashes)
Depth Rating 196.8' (60.0 m)
Construction Body: Polycarbonate resin
Dimensions (W x H x D) Approximately 2.7 x 3.7 x 4.2" (68.5 x 93.9 x 106.6 mm)
Weight Approximately 14.0 oz (397.0 g)
Underwater: Approximately 4.9 oz (139.0 g)
Sea & Sea Internal YS Converter/C for the MDX-5D MkIII Housing
  • Mounting Plate
  • Silicone Grease
  • Lithium Battery CR-2
  • Converter Mounting Screw
  • Limited 1-Year Warranty
  • See any errors on this page? Let us know.