System Sensor has developed the Equivalent Facilitation Web-based calculator in an effort to provide architects and engineers with easy access to a tool that will assist in the design of audible/visible notification device circuits. By visiting www.systemsensor.com and then selecting the Install/Specify System Sensor Products tab or going directly to http://systemsensor.com/equivalent_facilitation/index.html, visitors are able to perform notification circuit design calculations by entering ceiling strobe candela values and inputting the longest wall and the ceiling height of the room.