Hello,

I just picked up 3 used A-140s.
They seem to be a little older
than the others I have and they
have flat-top LEDs versus the
rounded LEDs in my other A-140s.

Did the A-140 go through a design
revision somewhere along the line
I ask because I like the response
of the flat-top LED modules better
than my others.

Thanks in advance,

Ethan