I purchased 5 of the above switches and got them to work but they have some odd “flashing” behavior (all green lights flash every few second). The manual doesn’t actually show that sequence but I’m guessing that there is something wrong with the 'Keep Alive" setting (too sort). I use the standards “Z-Wave Metering Switch” device types. Could anyone give me some guidance on the steps I use to change that setting in the device? E.g. do I need to write a new device driver?