TFM 12 Fire Alarm Technical Practice Test

Automatic fire alarm signal initiating devices with integral trouble features should use signaling contacts to ensure alarm transmission continuity. Signaling contacts are specifically designed for transmitting alarm signals and trouble conditions to the fire alarm control panel. This design allows the system to effectively communicate the status of the initiating devices.

Signaling contacts are essential in maintaining system integrity during both normal and fault conditions. They ensure that all alerts, such as the activation of an alarm or any trouble conditions, are promptly and accurately relayed to the main panel, which is crucial for the overall operation of the fire alarm system. This function is vital for the reliability and effectiveness of fire safety measures.

In contrast, power contacts are typically used to control power to devices rather than to send signals regarding their operational status. Control contacts might also be used in various control circuits but are not specialized for alarm transmission. Emergency contacts are mainly utilized for scenarios requiring immediate action but do not cover the routine signaling needed in the context of alarm transmission continuity.