Interconnection Circuitry of Noncoded Remote Station Protective Signaling Systems
standard by National Electrical Manufacturers Association, 01/01/1989

Fire Service Annunciator and Interface
standard by National Electrical Manufacturers Association, 12/01/2005

Emergency Communications Audio Intelligibility Applications Guide
standard by National Electrical Manufacturers Association, 09/01/2008

Emergency Communications Audio Intelligibility Applications Guide
standard by National Electrical Manufacturers Association, 2014

Applications Guide: Carbon Monoxide Alarms and Detectors
standard by National Electrical Manufacturers Association, 08/15/2013

Applications Guide for Carbon Monoxide Alarms and Detectors
standard by National Electrical Manufacturers Association, 2018

Low Frequency Audible Signals
standard by National Electrical Manufacturers Association, 2015

Considerations in Planning Code Call Implementation in Health Care Facilities
standard by National Electrical Manufacturers Association, 2015

UL 1069 Standard for Hospital Signaling and Nurse Call Equipment White Paper
standard by National Electrical Manufacturers Association,