Detail information:

New SUBAL TTL for Canon is compatible with all SUBAL housings for Canon cameras. This TTL version supporting following strobes:
• Sea & Sea YS-D1
• Sea & Sea YS-D2
• Sea & Sea YS-250
• Inon Z240
• Inon D-2000
• Inon S-2000
• Ikelite DS161
• Ikelite DS61

SUBAL TTL for Canon doesn't come with optical LED trigger which is selling separately. SUBAL TTL system for Canon uses two CD2032 batteries.