PIC purists - lease forgive me. This question is only indirectly PIC
related, but what the heck - LCD displays are discussed all the time!

Here is the question. I have a project based on a PIC 16C61. The
input is connected to 3 buttons. I want to add RF remote to it. My
garage door opener seems to have exactly what I want in it - a single
chip design with a 3 button input. The problem is that I don't
recognize the chip used in it - it is marked 125C67.
Does anyone know:
1. What is this chip and who makes them.
2. Is there a place I can get ready made transmitter and receiver
modules?

I'm aware of the National Semi LM1871/LM1872 chips, but the design
seems more compicated - there are only 2 on/off channels and power
switch is separate. My remote is activated by a single contact pair
(one of three).

Thanks.

--
-Alex.