I’ve got a Dectet recently (second-hand) and have connected this to the outlet of an Devolo Ethernet Over Power plug (this one: http://www.devolo.com/en/Products/dLAN-1200+). In the week and a half that I have the Dectet it already went into protection three times (rapid flashes). This even happened while all the equipment was in standby and in a situation that I don’t expect any spikes to happen. Could this be related to the fact that it is plugged in into the Devolo?
Could be, but it also might be a firmware bug on the unit. Call us with the serial number and we can tell you. It may have to be returned for reprogramming.