Winland Electronics EA400 - Manual (Page 9)

D-011-0093 7
EnviroAlert EA400
Figure 3 shows a simplified functional diagram of the EA400 interfaces and functions.
The EA400 provides four Zones of monitoring as follows:
„ Zones 1 through 4 – Each Zone is equipped with a sensor input connector that can
be connected to any one of a variety of sensors (the EA400 is not equipped with a
built-in sensor). Using the appropriate external sensor, each Zone can be used to
monitor temperature, humidity, or presence of water. Programming and usage of
each Zone is fully independent of each other.
Each Zone has its own Form C relay output that activates when a monitored
environmental condition exceeds the programmed range. An AUX (Auxiliary) Output
relay is activated whenever any Zone is in alarm. It can be used to provide a single
output to the alarm panel or to an optional audible alarm.
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