Greg:
The tester is a Ideal cube (bug-eye) with GFCI test button. It does trip 5ma GFCI devices and CBs. I am wondering why it tripped an AFCI. 20 amp circuit thru DR & on to countertop. GFI devices on counter top, duplex TR receptacles in DR. Put tester in GFI device, push button, AFCI trips! Think it's the electronics in the GFI device?
This has not happened in the past; just on this one SFD final.
