What type of manual fire alarm box is assigned a code that triggers an audible notification device?

The type of manual fire alarm box assigned a code that triggers an audible notification device is known as a coded manual fire alarm box. In this system, when the manual alarm box is activated, it sends a specific coded signal to the fire alarm control panel. This coded signal corresponds with pre-assigned notifications which allow the system to identify which manual station has been activated. Consequently, the control panel can then initiate the appropriate response, which includes activating the audible notification devices like alarms or sirens.

Coded systems are particularly beneficial in larger buildings or complexes where there may be multiple alarm points, as they help in quickly determining the location of the emergency. This enhances the efficiency of response efforts by firefighters and emergency services. In contrast, uncoded manual fire alarm boxes do not send a unique signal; they simply alert the system without indicating the specific location of the alarm activation. Other options, such as manual and automated alarms, refer to different aspects of fire alarm systems but do not specifically denote the coded nature that triggers audible alerts.