Specifications

3NetBotz Rack Monitor 450/550 Installation and Quick Configuration Manual

Alert LED Indicates the alert status of the system. When more than one alert exists, the most severe
will be indicated.
• Flashing once every eight seconds—Informational
• Flashing once every four seconds—Warning
• Flashing once every two seconds—Error
• Flashing once every second—Critical
• Flashing twice per second—Failure

Voltage Output Provides 12 VDC or 24 VDC (75 mA) to one connected device.
Relay Output Ports 1, 2 Used for connecting relay-controlled external devices.

Power LED Indicates whether the unit is receiving power (green—receiving power; dark—not
receiving power).

4-20 mA Inputs Used for connecting third-party sensors with an input current range from 4 to 20 mA.

Sensor ports Used for connecting APC sensors, third-party dry-contact sensors, and standard third-
party 0-5 V sensors. (See “Additional Options” on page 1 for details on APC sensor
options.) Third-party dry-contact state sensors require the NetBotz Dry Contact Cable
(NBES0304). Standard third-party 0-5 V sensors require the NetBotz 0-5 V Sensor Cable
(NBES0305).

Leak Rope port Used for connecting a NetBotz Rope Leak Sensor (NBES0308)

Beacon port Used for connecting an Alarm Beacon (AP9324).

A-Link port Used for cascading NetBotz sensor pods and temperature and humidity sensors with
digital displays. Provides communications and power to the connected devices over
standard CAT-5 cabling with straight-through wiring. For details, see “Connect Sensors
and Sensor Pods to A-Link Ports” on page 10.

Alert LED Same as item 4 above.

Power LED Indicates whether the unit is receiving power (green—receiving power;
dark—not receiving power).

USB-B port (Console
Port)
Used to connect a console to the appliance. Enable the USB-to-serial converter support
(FTDI) in your operating system.

USB-A ports Used to connect USB devices to the appliance.
Item Description