alarm warning

[tahoe-ClassB]

Hi, Have had my Rialta for only a few days, and when I went into the coach just now, there was an alarm sounding from the back of the coach. I checked both the smoke & CO2 detectors; wasn't them. It was comming from further back, but the aisle was blocked: (wife was moving furniture for a friend, and the hutch bottom is still there). So I couldn't pinpoint the sound. Today the coach is parked in Sacramento, where it's about 98 degrees, and the windows & vents were shut. I opened the roof vent & one window, the alarm noise (like a smoke alarm), is still there; any ideas::



Tahoe (wish I was there right now)

 

[tahoe-ClassB]

Found the alarm noise; I switched the rear overhead light switch to on, and it stopped. Any ideas?