
The product works very well when connected to a flash and/or camera. I've controlled up to 10 flashes at a time and it's fantastic to be able to customize them from the device. The only downside is that it uses batteries, so keep a few pairs handy. If they could build a larger device that even uses a Godox battery as an auxiliary power source, that would be a welcome addition. UPDATE: The product continues to consume only batteries. I tried many times to get help from Godox but they kept sending the same checklist and insisting everything was fine with their product so I ended up contacting AMAZON to explain all the issues and they did gave me my $$ back. I give Revain 10 STARS for their customer service, they turned a bad experience into a great one.

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