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NetGuardian 8A

The NetGuardian 8A offers a compact design, high analog capacity, and a few controls and discretes. It comes with 1 internal temp sensor and a D-Wire sensor input that allows you to daisy-chain up to 16 D-Wire sensors.


Key Features

  • Small unit with a large number of analogs, making it more cost-effective compared to other RTUs
  • RJ45 termination for analogs, discretes, and relays, making it easier to connect your devices and reduces complicated wiring
  • 1 D-wire port - daisy-chain up to 16 sensors for better environmental monitoring
  • 4 opto-isolated discrete alarms (TTL only)
  • 1 built-in temperature sensor for environmental monitoring

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Analog inputs provide valuable information about your network. Rather than providing binary inputs like discrete alarms (door open/closed, power active/fail, etc.), analogs provide information on a scale. Temperature ("83.6 degrees"), voltages ("-47.89 VDC"), fuel levels ("16% remaining"), and other metrics that can have more than two states are best monitored by analog inputs for the most accurate readings.

The trouble is, if you want an RTU that has lots of analogs, you usually have to pay for a lot of discretes and controls as well. That's a waste at sites where your primary need is for analogs. You end up overpaying for your RTU and only using a few of its features.

You need a unit that is designed with your network in mind: an RTU that is focused more on analog inputs than discrete alarms or controls relays. That gives you the capacity you need to monitor your environmental levels, propane tanks, or voltages - without forcing you to buy more RTU than you need.

That's where the NetGuardian 8A by DPS Telecom comes in. This small RTU offers 8 analogs, which are terminated by RJ45 connectors, reducing the amount of troublesome wiring needed to monitor your environmental levels. Each analog has 4 user-configurable thresholds (Major Under, Minor Under, Minor Over, and Major), giving you an accurate picture of the conditions at your remote sites.

The NetGuardian 8A also has 4 opto-isolated discrete alarms (TTL only) and 2 Form C relays. These are also terminated by RJ45 connectors, making it easier than ever to connect to your RTU. This way, you can monitor the binary conditions at your site and also have the capability to remotely control a piece of equipment.

The NetGuardian 8A comes standard with 1 internal temperature sensor and 1-RJ11 plug, allowing up to 16 D-Wire sensors to be daisy-chained together. The RS232 "reach through" serial port will allow you to configure devices connected to this unit using the easy-to-use web browser interface.

Don't overpay for features you won't use just to get the analog capacity you need.

Form Factor

  • Height: 1.75"
  • Width: 16.9"
  • Depth: 5.12"
  • Mounting:
  • Weight: 2.2 lbs

Core Features

  • Analog Alarms: 8
  • Control Relays: 2
  • Craft port: 1 serial port
  • D-Wire: 1-Plug
  • Discrete Alarms: 4
  • External Speaker
  • Fuse: 3/4 Amp GMT
  • Internal Temp Sensor
  • LED status indicators
  • NIC: 10/100BaseT
  • Ping Targets: 32
  • Power Supply: -24/48Vdc (wide range)
  • RJ45 connections: 32
  • Serial Port : RS232

Operating Conditions

  • Camera Resolution: 3 megapixel
  • Max. Current: 1 Amp, AC/DC
  • Max. Voltage: 60VDC / 120VAC
  • Operating Humidity: : 0% -95% non-condensing

Optional Features

  • Power Supply: +12/+24
  • 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 8A 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.