User Manual

OAS/EMS NODES
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Physical Interface
The physical interface includes the housing, mounting options, switches, connectors, LEDs,
and other features. A number of key features are described in the sections below.
Front- Cover Closed
Figure 3-2 shows the front of an OAS node and an EMS node with their covers closed.
FIGURE 3-2: FRONT OF OAS NODE (RED)/EMS NODE (BROWN)- COVER CLOSED.
As shown in Figure 3-2, features on the outside of an OAS/EMS node include red, yellow, and
green LEDs; a sounder output; a temperature/humidity sensor port (EMS nodes only); cover
hinges; a cover fastener; holes for mounting the node; and connectors.