IBECS, an implementation of an Embedded Device Network designed to allow communications between lighting systems, building equipment, and sensors and meters will be presented during this seminar.   IBECS is a low-cost network infrastructure that piggybacks on existing Ethernets to allow control of building loads at an added cost under $5/control point. Several core components of the IBECS technology have been developed and tested at LBNL including: a network/ballast interface, an addressable light switch, a motorized blind interface, an environmental sensor (capable of measuring ambient light, occupancy and temperature) and a simple energy meter for lighting circuits. On the drawing board are designs for a CO2 sensor, airflow sensor, and an HVAC damper.   Francis Rubinstein will also present the status of the research and how IBECS can serve as the networking backbone for integrating building equipment control.