Wifi is a radio signal, and when a radio signal passes through a solid material, it weakens—and certain materials have a ...

These are kind of like the WeMo, only they aren’t controlled via WiFi. Instead, they come with an RF controller. [Tim] just needed to find a way to bridge the gap between the RF remote and WiFi.

This machinable, closed cell polyurethane foam provides a low-loss protective, RF-transparent layer for applications that demand optimal performance where electrical insulative materials are required.