Final answer:
The one Main Repeater system can support a maximum of 200 non-Repeater system devices such as dimmers, keypads, sensors, and thermostats.
Step-by-step explanation:
On a one Main Repeater system, the maximum number of non-Repeater system devices (dimmers, keypads, occupancy/vacancy sensors, system thermostats) that can be supported is B) 200.
These devices communicate with the Main Repeater, which manages signals and commands within the system. It's important to understand that adding too many devices beyond the specified limit can lead to system instability and communication issues. Therefore, it's crucial to adhere to the manufacturer's guidelines for system device limits to ensure optimal functionality.