keyless entry

[jhwkns]

I'm planning on installing a new alarm system. The units I've looked at, even the low end stuff are two channel.
What's involved with attaching servos to the lock mechanism for keyless entry, and how difficult is this? Please tell me what brand of alarms you're using, and how well they work for you. I'm not looking for a lot of bells and whistles (well maybe I am when it goes off), but I'd like a good reliable, and durable system.