s-TURTLE 3 SMART TTL trigger for Sony systems

The s-TURTLE SMART 3 is the latest-generation TTL trigger from TRT-Electronics, developed exclusively for Sony’s high-performance mirrorless camera systems. Built on a fully redesigned hardware platform with enhanced software and broader strobe support, it delivers precise TTL and manual (WL) flash control via fiber optic or sync cord connections—even underwater.

As the first company to offer a TTL trigger for Sony mirrorless, TRT-Electronics continues to lead with the SMART 3 series—offering next-level features and professional-grade reliability for demanding underwater photographers.

Key Features – SMART 3 Version:

• Redesigned SMART 3 hardware with faster performance and improved compatibility
   
• User-replaceable battery with 3× the capacity of previous SMART 1–2 models
   
• USB-C port for fast charging and convenient PC/Mac configuration
   
• Reinforced switches and a rugged output connector for LED panel or sync cord
   
• TTL & Manual (WL) mode switching directly from the camera menu – even underwater
   
• “SMART” battery check button:
  • 4 flashes = 100%
  • 3 flashes = 75%
  • 2 flashes = 50%
  • 1 flash = 25%
     
• High-Speed Sync (HSS) available in Manual (WL) mode with compatible strobes
   
• No-preflash WL mode supports:
  • First curtain sync
  • Second curtain sync
  • Strobe/multiflash burst
     
• Compact, travel-ready design for use in any underwater shooting environment

Compatible Sony Cameras (TTL / MANUAL Mode)

• A7 Series: A72, A7R2, A7S2, A73, A7R3, A7S3, A7R4, A74, A7R5
• Alpha 1 & 9 Series: A1, A9, A9II
• A7C Series: A7C, A7CR, A7CII
• 6000 Series: All 6X00 models
• Tested and supported for HI+ burst: A74, A1, A7R5, A9II

Compatible TTL Strobes (as of June 2025)

• Ikelite: DS160, DS230
• Seaflash: 60D, 160D
• Inon: Z240, Z330
• Sea&Sea: YS-D1, YS-D2J, YS-D3, YS-D3 DUO
• Subtronic: 270
• Retra: PRO X, PRO MAX
• Backscatter Mini Flash 2: Manual / HSS
• AOI Intelli Strobe
• Backscatter HF-1
• APOLLO: III V2.0, S

We regularly update supported strobes. Please download the latest PC/Mac configuration software to verify compatibility with your camera and strobe system before purchase.

In the Box

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

Setup Notes

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

During checkout, please indicate your strobe model and preferred connection type (fiber or sync cord) so we can pre-configure the trigger for optimal performance.