Innovation buttons...the ones with the pc type card with the two micro switches on them? If so, this button has dogged me for quite some time. One of the micro switches will fail with the pud sunk in making up the button call input. Gently tapping the button will generate a call and it'll stay made up. Maybe a car button giving you grief if only one car is faulting? I know you said "any floor", but... Just my thoughts. I think BRG and I are talking the same thing.
