System Sensor MOD2WThe System Sensor MOD2W is a 2 wire loop test maintenance module for i3 series detectors. It interprets the i3 clean me maintenance signal, provides local indication and a relay output when service is required, and enables the EZ Walk one button loop test to quickly verify initiating loop wiring and connected detectors. It also supports Class A (Style D) wiring on the initiating loop. Supported Detectors Up to twelve i3 2 wire detectors (2W B and or