For those of you using this type of zone, how did you go about wiring the zone? I am good with relays and electricity, but I can't think of a way to have a single zone controlled both by the battery (which would open the zone on a low batt) and controlled by AC (which would close the zone). I mean, what if both happen, which is not unreasonable, right? The elk is running on batt power because we lose AC and then the batt goes low. So which way does the zone go now? Open or closed? Or am I supposed to set up two zones, one for the battery and one for the AC power?