I hooked up power to it (110v ac black to “L” and white to white) and paired it successfully
The problem is that when I turn on the third any three switches, the device makes a fairly loud click sound, all switches turn off, and the loses it pairing. Usually it “magically” re-pairs itself but often requires me to use “add device” to re-pair it.
Sometimes turning on third will not cause, but fourth always will.
You using the Generic Zigbee Multi-Endpoint switch driver, I assume? (though this doesn't appear to be a driver issue).
Do you have loads on the switches, or is this happening without a load? Have you tried it with loads and without? I just wonder if without loads on the switches if it does the same thing. It is almost like you are draining power from the Zigbee radio when you hit that third switch causing it to lose connection.
