Photos are of the Speedlite Transmitter for sale, it works as it should, if you see the post it’s still for sale $30.00, call for information sevenonefour642sixeithtsixeight
The Canon Speedlite Transmitter ST-E2 is an infrared (IR) wireless flash controller that mounts on a compatible Canon EOS camera to trigger and control Speedlite slave flashes in two separate groups (A and B). It enables features like E-TTL autoflash, High-Speed Sync, FE Lock, and Flash Exposure Compensation, and also provides an integrated AF-assist beam for low-light focusing. The ST-E2 is compatible with EX-series Speedlites like the 550EX, 580EX, 430EX, and 420EX