Bosch Security Systems Inc., of Fairport, N.Y.

The notification appliance circuit module can cause the panels to fail to activate an audible or visual alarm in the event of a fire.

On all systems, when the alarm verification feature of the system is turned on, the control panel can fail to sound an alarm if a fire occurs. In addition, on systems with 50 or more reporting stations, a delay in sounding an alarm and reporting a fire may occur if the loop for the alarm system is broken.