The wall mounting instructions for a First Alert P1210E smoke detectors say to put the mounting slots at the 3 o'clock and 9 o'clock positions. But that requires using plastic drywall anchors for the mounting screws which I'd rather not do.
With the mounting slots at 12 and 6 o'clock, I can screw right into the wall stud. Any reason not to do it that way?
My first effort was to call their tech support line...and I've been on-hold for 33 minutes now.
I'm thinking I can get a faster answer here!