Control panel expander. (Marketplace).
Radionics of Salinas, California, has released the D7039 Multiplex Expansion Module, which enhances the capabilities of the D7024 Fire
Alarm Control Panel. The module expands the base system to 255
addressable points, increases the number of relay outputs to 58, and
adds 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.
A line of addressable accessories (featuring rotary switch addressing)
is available. For example, addressable smoke detectors provide a
dirty-detector signal at the control panel.