Dude this thing is amazing. I have an old Arrow Paralinx Plus that costs about twice as much as this one and the Mars 400S is much better. Super convenient way to attach the transmitter to a hot or cold shoe. Also very impressed that I can power the receiver from USB as my gold batteries on my client monitor have USB power connectors. I also love how small they are, I can easily slip them in my camera bag and take them anywhere.
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