Thank you. that's exactly what was wrong. i didn't see the notch. its good now. So i have one b800 firing when i snap my picture. how do i sync the other 2? it only has one receiver.
Technical Support wrote:
First, make sure the frequencies match. This is indicated by the end of the slot in the dial that has a deeper cut. Often, these dials are turned 180 degrees from each other, as the deeper cut is not noticed.
If this does not work, try changing the frequency of both devices to another frequency (skip 5 settings or so).
When you change the CST frequency, it takes 3 test button presses before it resets to the new frequency.
If this does not work, one of the devices is faulty and will need to be swapped out if it was just received. Customer Service will be able to help facilitate this for you.