The 6511-AP series of alarm panels are available in several configurations for monitoring of almost all functions. The 6511-AP series also has Starter Panels, capable remote start and stop panels for the wheelhouse or engine control room for single and multiple power packs. 

The 6511-AP panels typically come in two primary configurations, single panel or dual panel, with an underside protected housing depth between 3" and 8" (7.6cm and 20.3cm). Standard features include Sonalert and a dimmer switch. 

The photo shown is of a dual alarm panel configuration, the 6511-APE10.