DIN Rail 8 Input 4 Output Expander


The Protege DIN Rail 8 Input/4 Output Expander provides the interface of up to 8 zone inputs and the control of 4 high current Form C relay outputs to the Protege system, an advanced technology security product providing seamless and powerful integration of access, security and building automation. With extensive hardware advancements that allow flexible input programming and configuration, and structured control of lighting and automation systems, the Input/Output Expander is designed for use with industry standard DIN Rail mounting.

Key Features:

Power Supply

The Protege DIN Rail 8 Input/4 Output Expander operates from a 12VDC input. Ultra low current requirements ensure cost effective power distribution.

Connectivity and System Expansion

Expansion of the Protege system with local inputs and outputs allows convenient cost effective expansion and added benefit of:

  • 8 inputs that can be used to perform any system alarm and automation functions
  • 4 multiple function outputs for use in any programmable output entry, ideal for connection in an electrical switch room to control signage, lighting and building automation
  • Address configuration is achieved using the address programming feature of the Protege System Controller
  • Outputs can be configured to automatically turn on when powered up, on communication failure, or to resume previous state


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

Upgradable Firmware

Utilizing the latest flash technology and high performance communication mediums, the firmware can be updated using the ICT Loadit utility over the Protege system module network.

Ordering Code PRT-IO84-DIN
Power Supply
DC Input Voltage 11-14VDC
DC Output Voltage (DC IN Pass-Through) 10.45-13.85VDC 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
Outputs 4 FORM C Relays - 7A N.O./N.C. at 30 VAC/DC resistive/inductive
Inputs 8 (10ms to 1hr input speed programmable)
Trouble Inputs 16
Dimensions (L x W x H) 156.8 x 90 x 60mm (6.17 x 3.54 x 2.36")
Net Weight 310g (10.9oz)
Gross Weight 380g (13.4oz)
Operating Conditions
Operating Temperature -10° to 55°C (14° to 131°F)
Storage Temperature -10˚- 85˚C (14˚ - 185˚F)
Humidity 0%-93% non condensing, indoor use only (relative humidity)
Mean Time Between Failures (MTBF) 587,177 hours (calculated using RFD 2000 (UTE C 80-810) Standard)

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