Ouch! I had two Dolphin Dynamics--the second was a warranty replacement for the first. The first worked well for 2 years, then started having problems. The 2nd never worked properly and I sold it, with full disclosure, at a big loss.
I can't really help you. I have a Blue Diamond Wireless remote and it meets #'s 2, 3 and 4, but costs about $1500.
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