Protege DIN Rail 8 Input Expander


The Protege DIN Rail 8 Input Expander provides the interface of up to 8 inputs to the Protege integrated access control, security and building automation system, an advanced technology security product providing seamless and powerful integration. The Protege DIN Rail 18 Input Expander provides extensive hardware advancements that allow flexible input programming and configuration..

Key Features:

Power Supply

The Input Expander operates from a 12VDC input. Ultra low current requirements ensuring cost effective power distribution.

Connectivity and System Expansion

Expanding the Protege System with local inputs from the Protege DIN Rail 8 Input Expander allows convenient cost effective expansion:

  • 8 inputs can be assigned to any 2 areas in the system each being processed using different options or features.
  • Address configuration of the Input Expander interface is achieved using the address programming feature of the Protege System Controller.


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

Upgradable Firmware

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

Ordering Code PRT-ZX8-DIN
Power Supply
DC Input Voltage 11-14VDC
DC Output Voltage 10.83-14.0VDC 0.7A (typical) electronic shutdown at 1.1A
Operating Current 50mA (typical)
Total Combined Current* 1.5A (max)
Low Voltage Cutout 8.7VDC
Low Voltage Restore 10.5VDC
RS-485 Module Network
Inputs 8 High Security Monitored Inputs(10ms to 1hr input speed programmable)
16 if using input duplex mode
Trouble Inputs 16
Dimensions (L x W x H) 78.4 x 90 x 44.1mm (3.08 x 3.54 x 1.73")
Weight 151g (5.33oz)
Operating 0°-50°C (32° - 122°F)
Storage -10°- 85°C (14° - 185°F)
Humidity 0%-93% non condensing, indoor use only (relative humidity)

* The Total Combined Current refers to the current that will be drawn from the external power supply to supply the Input Expander and any devices connected to the Expander's outputs. The Auxiliary outputs are directly connected via electronic fuses to the N+ N- input terminals, and the maximum current is governed by the trip level of these fuses.

Discover how ICT products can protect your business

Talk to an expert today