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Protege DIN Rail
4 Channel Analog Input Expander


The Protege DIN Rail 4 Channel Analog Input Expander enhances the total integration philosophy of the Protege System by allowing the connection of any industrial automation sensor using the industry standard 0 to 10V signals, and self-powered 4-20mA current loop sensors. The data from the sensors can then be used for comparison functions, process control calculations, variable display and alarm activation in the Protege system.

  • Automatic scaling provides a full 4 to 20mA input range on the current interface
  • 10 Bit precision analog circuitry interfaces to the real world providing a high level of accuracy
  • 4x 100% independent analog inputs provide excellent noise and interface protection


Configuration of the analog input channels allows individual channels to be set up and programmed for specific functions without compromising other channels:

  • Each channel can be independently enabled
  • Always send and send on change can be configured per channel to ensure data is sent in the most efficient manner without continual traffic
  • Data can be logged to a file which can be reviewed or exported in CSV format for graphing or input into 3rd party systems

Extending the Protege System with 4 analog inputs from the Protege DIN Rail 4 Channel Analog Input Expander allows convenient cost effective expansion.

Address configuration is achieved using the address programming feature of the Protege System Controller.

Device power is supplied from a 12VDC input. Ultra low current requirements ensure cost-effective power distribution.

A single RS-485 communication interface port used for all network communication functions and interconnection to other modules.

Utilizing the latest flash technology and high performance communication mediums, the firmware can be updated via the Protege interface.


Ordering Information
PRT-ADC4-DIN Protege DIN Rail 4 Channel Analog Input Expander
Power Supply
DC Input Voltage 12VDC (+/-10%)
DC Output Voltage 12VDC 0.7A (typical) electronic shutdown at 1.1A
Operating Current 80mA (typical)
Low Voltage Cutout 8.7VDC
Low Voltage Restore 10.5VDC
RS-485 Isolated Module Network
Analog Inputs 4 (4 - 20mA and 0 - 10V input) 10 bit resolution
Trouble Inputs 8
Dimensions (L x W x H) 156 x 90 x 60mm (6.14 x 3.54 x 2.36")
Net Weight 270g (9.52oz)
Gross Weight 381g (13.4oz)
Operating Conditions
Operating Temperature 5° - 55°C (41° - 131°F)
Storage Temperature -10° - 85°C (14° - 185°F)
Humidity 0% - 85% (non condensing)
Mean Time Between Failures (MTBF) 784,316 hours (calculated using RFD 2000 (UTE C 80-810) Standard)

Regulatory Notices

This equipment carries the RCM label and complies with EMC and radio communications regulations of the Australian Communications and Media Authority (ACMA) governing the Australian and New Zealand (AS/NZS) communities.

Conforms where applicable to European Union (EU) Low Voltage Directive (LVD) 2014/35/EU, Electromagnetic Compatibility (EMC) Directive 2014/30/EU, Radio Equipment Directive (RED)2014/53/EU and RoHS Recast (RoHS2) Directive: 2011/65/EU + Amendment Directive (EU) 2015/863.

This equipment complies with the rules, of the Official Journal of the European Union, for governing the Self Declaration of the CE Marking for the European Union as specified in the above directives.

This equipment carries the UKCA label and complies with all applicable standards.

FCC Rules and Regulations CFR 47, Part 15, Class A.

This equipment complies with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference; (2) This device must accept any interference received, including interference that may cause undesired operation.


his is a Class A digital device that meets all requirements of the Canadian Interference-Causing Equipment Regulations.