By the way... I bought my wireless shutter trigger on eBay. It came with "instructions." Here they are verbatim:
Normal shooting
Turn on the receiver power switch, when the transmitter function switch sets as _B; support camera's single shoot or continuous shoot (when camera sets as single sheet shoot which is supported to single shoot function: when camera sets as continuous shoot which is support continuous shoot). Press fully button from transmitter, at this moment the transmitter transfers the shooting from focusing, the receiver's signal light turns on at the same time.
Now THAT clears it up! I'm trying to figure this thing out, but so far it is hit and miss to get it to work!
Thom