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Legrand PDU User Guide 137
Sensor/Actuator States
An environmental sensor or actuator shows its real-time state after being managed.
Available sensor states depend on the sensor type -- numeric or state sensors. For example, a contact
closure sensor is a state sensor so it switches between three states only --
unavailable
,
alarmed
and
normal
.
Sensors will be highlighted in yellow or red when they enter abnormal states. See
Yellow- or
Red-Highlighted Sensors
(on page 135).
An actuator's state is marked in red when it is turned on.

Managed sensor states:
In the following table, "R" represents any numeric sensor's reading. The symbol <= means "smaller than" or
"equal to."
State Description
normal
 For numeric sensors, it means the
readings are within the normal range.
 For state sensors, it means they enter the
normal state.
below lower critical "R" < Lower Critical threshold
below lower warning Lower Critical threshold <= "R" < Lower
Warning threshold
above upper warning Upper Warning threshold < "R" <= Upper
Critical threshold
above upper critical Upper Critical threshold < "R"
alarmed The state sensor enters the abnormal state.
unavailable
 The communication with the managed
sensor is lost.
-- OR --
 DPX2, DPX3, DX or DX2 sensor packages
are upgrading their sensor firmware.
Note that for a contact closure sensor, the normal state depends on the normal setting you have configured.
Refer to the Environmental Sensors and Actuators Guide (or Online Help) for detailed information, which is
available on Raritan's
Support page
(

Managed actuator states:
State Description
on The actuator is turned on.
off The actuator is turned off.
unavailable
 The communication with the managed
actuator is lost.
-- OR --
 DX sensor packages are upgrading their
sensor firmware.