Yeah, you can always built something to increase the gearing in some way. I was
pointing out that, if you use a servo, then you NEED to add additional gearing.
Either way, it's kind of a kludge, and an all-electronics approach would be preferable,
as OP said.
OTOH, he's buying non-agency-approved electronics stuff off ebay, designed by
who-knows-who, and tying it into the power mains in his house. Some people are
happy to do that - based on past threads on this forum - but I'm not.