All wiring must be installed in compliance with the National Electrical Code, applicable local codes, and any special requirements of...

When planning a keypad bus installation, keep in mind the following specifications:

4 Class A Notification Appliance Circuits, supervised and power-limited.

4 Class B Notification Appliance Circuits, supervised and power-limited – 4.7 kΩ, ½ watt P/N:71252 UL listed.

The XR500 Series diagram below shows some of the accessory modules you can connect for use in various applications.