As the latest in Belkin's WeMo line of home automation accessories, the WeMo Insight Switch ($60) is a somewhat niche but intriguing device -- a pass-through single wall outlet with a power meter in the center, enabling you to measure the length of time a single connected device is on how, the energy being consumed, and the amount of money that usage is costing you. All of these details can be monitored using a just-updated version of Belkin's WeMo…
