In support of Insteon, while I have had a couple of devices fail while under warranty over the years, recently, I took a lightning surge. It took out my ELK, ISY, and insteon modem connected to the ISY. Not one of the 25 insteon devices were affected by the surge. The surge was major because in addition to the ELK/ISY/Insteon Modem, it took out 3 garage door openers and their safety beam sensors, my whole house backup generator, a computer server, a NAS storage unit, my HP printer, my Davis weather station, the sensor in my fuel oil tank, and a couple GFI breakers. But, not one of the Insteon devices beside the modem which was connected to the ISY, was harmed. The AC powered devices that were blown out, were on surge protection but still were affected.