What is the maximum number of supervisory switches permitted to be connected to actuate a single transmitter?

The maximum number of supervisory switches that can be connected to actuate a single transmitter is 20. This regulation is important for maintaining the integrity and reliability of alarm systems, as it establishes a limit on how many devices can interact with a single point of control, ensuring that the system remains manageable and preventing potential conflicts or overloads. In systems designed for supervision, limiting the number of switches helps to ensure that the status of each switch can be reliably monitored and does not lead to confusion or misinterpretation of the signals sent to the transmitter. Therefore, understanding this limitation aids in installing compliant and efficient alarm systems.