16 Zone Input Expander


The Protege 16 Zone Input Expander provides the interface of up to 16 zone inputs, 2 bell/siren device Outputs and 2 programmable Outputs to the Protege integrated access control, security and building automation system, an advanced technology security product providing seamless and powerful integration. The Protege 16 Zone Input Expander provides extensive hardware advancements that provide flexible zone programming and configuration.

Key Features:

Local Monitored Power Supply

The Protege 16 Zone Input Expander provides a 16VAC input for power, utilizing low cost transformers and providing a fully monitored reader and door solution:

  • Deep discharge prevention of the battery with automatic electronic cut-off
  • Manual or processor controlled battery charge selection of 350mA or 700mA
  • Intelligent charging algorithm monitors battery and AC supply allowing optimum performance to be achieved using standard lead acid batteries

Connectivity and System Expansion

Expanding the Protege System with local zone (input) and PGM (Output) from the Protege 16 Zone Input Expander allows convenient cost effective expansion:

  • 16 zones can be assigned to any 4 areas in the system, each being processed using different options or features
  • Address configuration of the Protege 16 Zone Input Expander is achieved using an 8 way DIP switch


Galvanic isolated RS-485 communication interface port used for all network communication functions and interconnects to other modules. 100%  isolation prevents ground loops and cross phase differential.

Upgradable Firmware

Utilizing the latest flash technology and high performance communication mediums the firmware of the Protege 16 Zone Input Expander can be updated using the ICT loadit utility over the Protege system module network.

Ordering Code PRT-ZX16-PCB
Operating Voltage 120VAC primary, 16 to 16.5VAC secondary, 60Hz (via transformer)
Operating AC Input Current 3.15A @ 16.5VAC, 3.3A @ 16VAC when Total Combined Current = 2.5A
2.2A @ 16.5VAC, 2.25A @ 16VAC when Total Combined Current = 1.7A
Operating Current 120mA (Typical)
Total Combined Current 1.7A (Max) using a 37/40VA transformer
2.5A (Max) using a 60VA or greater transformer
Electronically limited at 2.5A
AUX DC Outputs 11.0V-12.3V, 700mA (Typical) Electronic Shutdown at 1.1A
B1/B2 DC Outputs (Continuous) 11.0V-12.3V, 8 Ohm 30W Siren or 1.1A (Typical)
B1/B2 DC Outputs (Inrush) 1500mA (1.5A)
Battery Charging 350mA/700mA
Battery Low 11.2VDC
Battery Restore 12.5VDC
Electronic Disconnection 9.4VDC
Communication (Serial) 1 Isolated RS-485 Communication Interface Port 12VDC @ 28mA. (Input)
Zone Inputs (System Zones) 16 High Security Monitored Zone Inputs
Trouble Zones 16
Tamper Input Dedicated Hardware Tamper Input
PGM Outputs 2 50mA (Max) Open Collector Output general functions
Status Output 1 50mA (Max) Open Collector Output
Operating Temperature 0˚- 50˚ Celsius (32˚ - 122˚ Fahrenheit)
Storage Temperature -10˚- 85˚ Celsius (14˚ - 185˚ Fahrenheit)
Humidity 0%-93% non-condensing, indoor use only (Relative Humidity)
Dimensions (L x W x H) -10˚- 85˚ Celsius (14˚ - 185˚ Fahrenheit)
Humidity 183mm X 162mm (7.2" X 6.4")
Weight 233g (8.21oz)

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