o-TURTLE 3 SMART TTL trigger for Olympus / Panasonic systems

Advanced TTL and Manual Flash Control—Now Smarter, Faster, and More Powerful

The o-TURTLE SMART 3 is the most advanced TTL trigger ever developed by TRT-Electronics for Olympus and Panasonic mirrorless cameras. It offers precise TTL and manual flash control via fiber optic or sync cord, and it’s built on a brand-new hardware platform with upgraded software and expanded strobe compatibility.

This is more than just a name update—SMART 3 brings professional underwater photographers a reliable, high-performance trigger for creative lighting control in even the most challenging environments.

Key Features (SMART 3 Version):

• New-generation hardware with improved stability, speed, and compatibility
   
• User-replaceable battery with 3× the capacity of previous SMART 1/2 models
   
• USB-C port for charging and configuration via PC or Mac
   
• Durable connector and reinforced switches for long-term reliability
   
• LED panel or sync cord output options included
   
• TTL & Manual mode switching via camera menu—even underwater
   
• "SMART" button for battery level check:
  • 4 flashes = 100%
  • 3 flashes = 75%
  • 2 flashes = 50%
  • 1 flash = 25%
     
• Supports First and Second Curtain Sync
   
• Automatic High-Speed Sync (HSS) with configurable shutter speed limits via software
   
• Compact and lightweight design for travel-friendly underwater shooting

Camera Compatibility (TTL / Manual / RC Mode):

• Olympus Mirrorless Cameras (Full TTL/Manual/RC):
• All OM-D models including:
• E-M1, E-M1 Mark II, E-M1 Mark III
• E-M5, E-M5 Mark II, E-M5 Mark III
• E-M10, E-M10 Mark II, E-M10 Mark III
• E-M4, OM E-M5
• Panasonic Mirrorless Cameras (TTL/Manual only – RC mode not supported):
• GH4, GH5, GH6

Supported TTL Strobes (as of June 2025)

• Ikelite DS160
• Seaflash 60D, 160D
• Inon Z240, Z330
• Sea&Sea YS-110A, YS-D1, YS-D2, YS-D2J, YS-D3, YS-D3 DUO
• Subtronic 160, 270
• OneUW, RED64
• Retra PRO, PRO X, PRO MAX
• AOI Intelli Strobe (set to SONY mode)
• Backscatter HF-1 (set to SONY mode)
• Apollo S

New strobes are added regularly. Please download the latest PC/Mac configuration software to confirm compatibility before purchase.

In the Box

• 1× o-TURTLE SMART 3 TTL Trigger for Olympus/Panasonic with accu
• 1× plus accumulator
• 1× LED panel (or optional sync cord output)
• 1× USB-C charging and configuration cable

Setup Note

For fiber optic connections, we recommend using multicore (613) cables for optimal signal transmission.

At checkout, please specify your strobe model and connection type (fiber optic or sync cord) so we can pre-configure the trigger for best performance right out of the box.