True or False? A normally closed contact opens during an alarm event.

A normally closed contact is designed to remain in a closed position under standard conditions, allowing current to flow through the circuit. When an alarm event occurs, this contact opens, interrupting the circuit, and signaling that there is a problem or an issue that requires attention. Therefore, the statement that a normally closed contact opens during an alarm event is false.

In the context of alarm systems, when a normally closed contact is engaged, it indicates that everything is functioning properly. An alarm event being triggered means that the contact should open to alert the system and its users about the issue. Hence, stating that the contact opens during an alarm event—while it is indeed correct in its functioning—is being presented in a false manner in the context of the question. The crucial aspect here is understanding the function of normally closed contacts in alarm systems and their role in signaling alarms through their opening mechanism during events.