Radionics has announced the release of the D7039 Multiplex Expansion Module, which enhances the capabilities of the D7024 Fire Alarm Control Panel. The D7039 expands the base system up to 255 addressable points, increases the number of relay outputs to 58 and adds an additional 400 events to the history buffer, for a total of 499 events. System users are increased to 100, an addition of 84 PINs from the base system. Radionics Inc.