Abbreviations
Abbreviation Description
MAPNET Multi-Application Peripheral Network – early version of addressable device communication.
IDNet Individual Device Network – later version of addressable device communication.
IAM Individually Addressable Module.
ZAM Zone Addressable Module – interfaces to conventional detectors.
RUI Remote Unit Interface – connects 4100ES Master panel and Slave transponders.
RTU Remote Transponder Unit – slave unit.
NAC Notification Appliance Circuit – drives DC-powered sounders and visual warning devices, usually with 
supervision.
MX Refers to detectors and devices using the MX DIGITAL communication protocol on an addressable loop. 
Not compatible with MAPNET/IDNet devices.
NC Normally Closed Relay Contact.
NO Normally Open Relay Contact.