User Manual
7.3 Environmental Monitoring
All Opengear console servers can be configured to monitor their operating environment.
External Environmental Monitor Devices (EMDs) can be connected to any Opengear console server serial
port. Each console server can support multiple EMDs.
Each EMD device has an internal temperature and humidity sensor plus one or two general purpose status
sensor ports which can be connected to smoke detectors, water detectors, vibration sensors or open-door
sensors.
Using the Management Console, administrators can view the ambient temperature (in °C or °F) and
humidity (percentage) and configure alerts to monitor the status and sensors to send alarms
progressively from warning levels to critical.
7.3.1 Connecting the EMD and its sensors
The Environmental Monitor Device (EMD) connects to any serial port on the console server via a
special EMD Adapter and standard CAT5 cable. The sensors screw into the EMD:
1. The EMD is powered over the serial port
connection and communicates using a custom
handshake protocol. It is not an RS232 device and
should not be connected without the adapter