i-TURTLE 3 SMART TTL trigger for Nikon DSLR and MILC system

Powerful, Reliable Flash Control – Now in the Advanced SMART 3 Version

The i-TURTLE SMART 3 is the latest-generation TTL trigger developed by TRT-Electronics, designed specifically for Nikon DSLR and mirrorless cameras. It provides fast, accurate TTL and manual flash control via fiber optic or sync cord, and is built on a completely new hardware platform with improved software and expanded support for the most advanced underwater strobes.

More than just a model update, the SMART 3 offers serious underwater photographers professional-level control, broad compatibility, and high-performance lighting integration in the most demanding environments.

Key Features – SMART 3 Version:

• Completely redesigned hardware for improved performance and reliability
   
• User-replaceable battery with 3× the capacity of previous SMART 1–2 versions
   
• USB-C port for fast charging and PC/Mac configuration
   
• Ruggedized switches and reinforced output connector for LED panel or sync cord
   
• LED output or optional sync cord connection included
   
• TTL & Manual flash mode switching via camera menu—even underwater
   
• Battery status check via SMART button:
  • 4 flashes = 100%
  • 3 flashes = 75%
  • 2 flashes = 50%
  • 1 flash = 25%
     
• Supports First Curtain and Second Curtain Sync
   
• High-Speed Sync (HSS) enabled via supported Nikon camera settings
   
• Lightweight, compact form factor ideal for travel and underwater use

Compatible Nikon Cameras (TTL / Manual Mode):

• Nikon Mirrorless (MILC):
• Z30, Z50, Z6, Z6 II, Z7, Z7 II, Z8, Z9
• Nikon DSLR:
• D5, D4s, D4, D850, D810, D810A, D800, D750, D600
• D500, D300, D300s, D7500, D7200, D7100, D7000, D90

Supported TTL Strobes (as of June 2025):

• Ikelite: DS160, DS230
• Seaflash: 60D, 160D
• Inon: Z240, Z330
• Sea&Sea: YS-D2J, YS-D3, YS-D3 DUO
• Retra: PRO X (MILC), PRO MAX (DSLR/MILC)
• AOI Intelli Strobe (Sony mode)
• Backscatter HF-1 (Sony mode)
• APOLLO III V2.0, APOLLO S

Support for additional strobes is updated regularly. Please download the latest PC/Mac configuration software to verify compatibility with your system.

In the Box

• 1× i-TURTLE SMART 3 TTL Trigger for Nikon 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 use, we recommend 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 out of the box.