The trigger ports on the back, do they just send a signal out? Or is it possible to turn on the projector by using them? If I connected these ports to the 12v trigger ports on my receiver (Pioneer VSX-AX2AS), will that make it turn on and off when I turn on and off my receiver? :)

i havent looked at the manual, but my guess is that its a trigger out only. I like the old DWin TV3 models because you could actually control the trigger with the remote.

Here's the manual: http://www.optoma.co.uk/optoma/uploads/manuals/H79-M-en-gb.pdf

I can't seem to figure out if they're both output only. It only says "relays".