A couple of discoveries to report:
1) The commons on all 8 relays are tied together on the pcb to a single common. This is not a problem for running an irrigation system but could be for other applications. My chicken coup door requires that the polarity change for up/down so you can't have a shared common. I made a workaround by soldering directly to the common of relays 7 and 8 on the back of the pcb and then scratching out the pcb tracings. It works but is not as elegant as one might like.
2) The remote requires that 2 circuits close to send the transmission (the buttons are double pole). Closing one of them makes the unit send a signal. Then after a few minutes the board dies (yes, I killed it). So, this is a pain since Elk relays are only single pole this means you need to use up 2 elk relays or you have to add another relay that is a double pole relay for the elk to control which then controls the rf transmitter. This problem I find to be truly annoying, the first problem doesn't bother me so much.
