Like our 19', our 21' has the EMS reader, the battery switch, the fuse box and the solar controller all underneath the dinette (we have the U-shaped). Woke up the second night in the trailer and happened to notice that the EMS was showing "OFF" and not flashing. Half asleep, we kind of panicked even though everything was working normally. After locating the manual, we found that one of us must have hit the switch (which I didn't even know was there) and, thus, turned off the EMS. Add this to the fact I've kicked open the fuse panel I don't know how many times already and I, too, wish these monitors were in another location -- but where in such a small space?
Also, we were told during our orientation that the battery switch should never be turned off unless the trailer is going into storage. BUT, I also found out that by turning the battery switch off, the propane sensor won't work (we, too, were asked if we traveled with dogs and if they 'passed gas', which might set off the propane detector). When I put forth the thought that, should we leave the trailer with the dogs inside, we could turn off the propane and switch off the battery, assuring that the detector wouldn't 'beep' and put our Border Collie into cardiac arrest, the ETI rep reluctantly said that it was "a possibility". Wonder if this would suffice rather than installing a propane detector cut-off switch ....