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Protege Single
Input Expander


The Protege Single Input Expander provides the interface of an additional input for monitoring and automation in the Protege integrated access control, security and building automation system. With an input which can be used for extended monitoring functionality, the Single Input Expander provides extensive hardware advancements that allow flexible input programming and configuration.

  • Ideal for schools and larger sites where long cable runs and complex wiring routes are present
  • Enables the simple upgrade of older systems where detectors are connected in a four-wire bus
  • Reduces the cost of labor for cabling during an upgrade
  • Connects directly to the RS-485 module network and utilizes secure and encrypted RS-485 module communications


The Single Input Expander is designed to allow the simple upgrade of systems where motion detectors, smoke detectors, and any other dry contact input devices have been deployed using a four-wire bus topology. Using the RS-485 module network, the expander is ideal for schools and larger sites where long cable runs and complex wiring routes are present.

Expanding the Protege System with local inputs from the Input Expander allows convenient cost effective expansion:

  • An input can be assigned to any 4 areas in the system each being processed using different options or features.
  • Address configuration is achieved using the address programming feature of the Protege System Controller.

Allows monitoring of a wide range of EOL capable or open contact sensors for security and building automation purposes.

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

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

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


Ordering Information
PRT-ZX1 Protege Single Input Expander
Power Supply
Operating Voltage 11 - 14VDC
Operating Current 20mA (typical)
RS-485 Isolated Module Network
Inputs 1
Dimensions (L x W x H) 7 x 18 x 20mm (0.28 x 0.71 x 0.79")
Net Weight Approx. 1g (0.04oz)
Gross Weight Variable packed qty.
Operating Conditions
Operating Temperature -10° to 55°C (14° to 131°F)
Humidity 0%-93% non condensing, indoor use only (relative humidity)
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.

Protege systems conform to AS/NZS 2201.1:2007 Class 5 intruder alarm systems standards for the construction, operation, performance and installation of intruder alarm equipment and systems installed in client's premises.

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.


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


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.