Kidde Commercial VS4-R | Fire Alarm Control Panel, 1 Loop Expansion, 1000 Point, 110V, Red

The VS4 provides one class A or class B intelligent device loop that supports up to 250 device addresses. Loop controller modules may be added in combination to expand total system capacity in 250-point increments to up to 1000 device addresses. VS4 panels include four nacs that may be wired for either class A or class B operation.