Modules

Single voltage-free relay output Single input for connection to dry contact inputs Output relay for 621-002 can be powered internally, or externally to conserve loop power load (selectable at installation) Monitors and signals three distinct input states     ·   Normal          ·   Alarm     ·   Open-circuit Polling indicator shows quiescent operation Separate indicators for Quiescent, Alarm and Fault conditions Integral isolator model available DC 24 V operation Easy installation with simple address setting DIP switches Convenient 2-wire connection Available with 125 usable address settings per loop when connected to Numens control and indicating equipment