The Wireless Energy Metering Communications System offers the ability to remotely monitor power consumption and communicate that information over a wireless link. This demo, from Electronica 2010, includes a module to measure voltage, current, and power, along with a wireless communications module operating in the European ISM band (868 MHz). It features the ADuCRF101 Precision Analog Microcontroller ARM Cortex M3 with ISM band Transceiver.
Video Provided by Digi-Key.