NetGuardian 224A

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The NetGuardian 224A is a light RTU with 24 discretes. This RTU is great for smaller sites that have a lot of discrete outputs.


Key Features

  • 2 general-purpose analogs
  • 2 general-purpose relay outputs
  • 4 D-Wire sensor ports
  • 24 discrete alarm inputs
  • Web interface: monitor without a master

The NetGuardian 224A monitors 24 discrete alarms and reports events to a Master Station, such as the T/Mon LNX, via LAN. It is equipped with 2 user-defined analog channels with 4 user defined thresholds per channel. The analogs terminate to convenient RJ45 connectors. There is 1 connector per analog channel and each input supplies +24Vdc to power your sensor if needed. Each analog may be configured for either -90 to 90 voltage range or 4-20 mA using field selectable shunt.

The NetGuardian 224A includes 24 discrete alarm inputs, 2 general-purpose relay outputs, and 2 general-purpose analogs, plus integrated battery voltage monitor. The unit also comes with 1 RS232 serial port for future use.

The NetGuardian 224A features DPS Telecom's user-friendly Web interface for convenient configuration and monitoring. Other features include real-time Clock (RTC), single -48VDC using RIA connector, a GigE Fiber port with SFP Sockets (ordering option) and 12 Port 10/100/1000 BaseT LAN switch (ordering option).

Other benefits of the 224A:

  • Plug 'n' play design – start monitoring in minutes
  • SNMPv3 compatible – send traps to your SNMP manager
  • 4 D-Wire sensor ports
  • Software reversible alarm inputs
  • Analog channels have integrated 24V power supply
  • Integrated temperature sensor
  • Expanded operating temperature range for extreme temperatures
  • 2-year hardware warranty
  • 30-Day no-risk money-back guarantee

Form Factor

  • Height: 1.75"
  • Width: 17"
  • Depth: 12.75"
  • Mounting:
  • Weight: 0 lbs

Core Features

  • Analog Alarms: 2
  • Control Relays: 2
  • D-Wire: 4-Plug
  • Discrete Alarms: 24
  • NIC: 10/100BaseT
  • Ping Targets: 32
  • Power Supply: -48Vdc
  • Rack Ears: Both
  • RoHS: 5/6
  • Serial Port: RS232
  • Web Browser Interface

Operating Conditions

  • Fuse: 3/4 Amp GMT
  • Humidity: 0-95% NC
  • Max. Current: 1 Amp, AC/DC
  • Max. Voltage: 60VDC / 120VAC
  • Temperature: -22 to 158F (-30 to 70C)

Optional Features

  • Power Supply: +12Vdc, +24Vdc, +48Vdc, -12Vdc, -24Vdc
  • Rack Ears: 19-inch, 23-inch
No additional software.

Explore different capacities

d-pk- d-pk- d-pk-netg5 832A d-pk-netg5 864A d-pk-
Product Name NetGuardian 420 NetGuardian 240T NetGuardian 224A NetGuardian 864A G5 NetGuardian 480 G4
Alarm Count 20 40 32 64 80
Analogs 4 2 8 8 4
Comparison Roughly half the capacity. Adds T1 transport. - Double capacity in same 1RU Massive discrete capacity.

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