We also have a smart home with a Ruckus r510 AP installed on the ceiling of the front entry hall. We were hearing beeps as well, and I thought they might be coming from the Ruckus. Turned out the beeps were coming from a smart lock that was installed on the front door --- seems like there is a little bit of slop in the locking mechanism, and whenever the lock gets confused about whether it is in the locked or unlocked position, it starts beeping occasionally. The beeping is fairly infrequent, so it was hard to track down. There is an LED on the indoor side of the door lock that normally flashes about every 5-6 seconds --- green for unlocked, orange for locked. If the LED isn't flashing, the lock is probably confused about its position, and you'll start hearing that occasional beep. Manually operating the lock between the locked and unlocked positions usually resolves the beeping issue.