@Katycat Interesting. I'm having a similar problem. I bought several new HS103 plugs. I already have some others connected. When I try to add the new plugs to the system, it knocks my router offline....

I have an HS103 that regularly disconnects. One time I saw a power glitch followed by the disconnect, so the problem may be related to something on the power line. My HS103 is plugged into a UPS and...