Wiring Specifications DMP recommends using 18 AWG for all LX‑Bus, NAC, and Annunciator Bus connections. The maximum wire distance between...

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.