Amazon.com : PHOLSY I-TTL-Off-Camera Flash Sync Cord for Nikon DSLR - 6.5' (2 m) Replaces Nikon SC-28 : Electronics
Amazon.com: DIYmall USB to TTL Serial Cable Adapter FTDI Chipset FT232 USB Cable TTL for Arduino ESP8266 (Pack of 1pc) : Electronics
Amazon.com : Voking VK750II TTL Camera Speedlite Flash Compatible with Nikon D3500 D3400 D3300 D3200 D3100 D5600 D7100 D7200 D5300 D5500 D500 D850 D750 and Other DSLR Cameras : Electronics
Amazon.com: HiLetgo 5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter : Electronics
Amazon.com : Godox TT350S Flash Speedlite for Sony Camera, 2.4G Wireless GN36 1/8000s HSS TTL Camera Flash Compatible for Sony Camera A7 A7R A7S A7-II A7-III A7R-II A7R-III A7S-II A6300 A6000 etc :
Cylewet 10Pcs 2 Channel Logic Level Converter 3.3V to 5V TTL Module for Arduino (Pack of 10) CYT1070 : Industrial & Scientific - Amazon.com
Amazon.com : Profoto Air Remote TTL-N : Electronics
Amazon.com: HiLetgo CP2102 USB 2.0 to TTL Module Serial Converter Adapter Module USB to TTL Downloader with Jumper Wires : Electronics
Amazon.com : NEEWER QPRO-C TTL Wireless Flash Trigger Compatible with Canon 1/8000s HSS Large LCD Screen Slanted Design 5 Group Buttons 9 Customizable Functions for Q3 Z1 NW420 NW655 NW665 S101-300W PRO/400W
Amazon.com : Godox TT350F 2.4G HSS 1/8000s TTL GN36 Camera Flash Speedlite for Fuji Cameras X-Pro2 X-T20 X-T2 X-T1 X-Pro1 X-T10 X-E1 X-A3 X100F X100T with Color Filters and Cleaning Cloth :
Amazon.com : MEKE MK-14EXT-N I-TTL Macro Ring Flash Compatible with Nikon D7100 D7000 D5200 D5100 D5000 D3500 D3200 D3100 D90 D300S D600 with LED AF Assist Lamp : Electronics
Amazon.com : Flashpoint Zoom Li-on X R2 TTL Round Head On Camera Flash for Canon EOS,This Wireless Speedlight for Canon is a Professional Camera Flash Kit w/76Ws 2.4G 2600mAh Li-ion Battery 480
Amazon.com : Fully Dedicated Automatic TTL Flash for Canon DSLR Cameras Including EOS Rebel T3, T3i, T4i, T5, T5i, T6, T7, T6i, T6s, T7i, SL1, SL2, EOS 60D, 70D, 77D, 80D, 5D
Amazon.com: WITMOTION USB-UART 6-in-1 USB to Serial Converter, Multifunctional (USB to TTL/RS485/232, TTL-RS232/485, 232 to 485), Universal Adapter Module with CP2102 Compatible with Windows 7/8/10,Linux, Arduino : Electronics
Amazon.com : Godox Ving V860II-C E-TTL Li-ion Flash Speedlite for Canon Cameras 6D 50D 60D 1DX 580EX II 5D Mark II III : Electronics
Amazon.com: DSD TECH SH-U09C5 USB to TTL UART Converter Cable with FTDI Chip Support 5V 3.3V 2.5V 1.8V TTL : Electronics