So there are thousands upon thousands of these around, most of them are quite low range, regardless of their claims. Basically, Dad's garage door isn't easy to find remotes for, so the easy solution is to connect a RF low voltage switch across the wall switch wiring. I bought him one a while back, but the range was dismal. I was wondering what the trick is to finding a long-range one, without just looking for one that costs triple figures? Is it more in the transmitter than the receiver? Or it really quite equal?