Spec Sheet

NXT - 4x4
Input/Output Expansion Module
2305 Bering Drive l San Jose, California 95131
408-435-8400 l Toll Free: 800-260-5265 l Fax: [phone]
e-mail: [e-mail] web: www.kerisys.com
NXT - 4x4 Input/Output Expansion Module
4 auxiliary Inputs and 4 auxiliary Outputs per module•
Up to 4 modules (16 Inputs and Outputs) can be added per •
NXT-4D Controller, up to 2 modules (8 Inputs and
8 Outputs per NXT-2D Controller
Re-assignable, Interchangeable with •
controller’s door I/O
4-State Supervision on Inputs•
Can be used for Door Forced and Door Held •
Open Alarms as well as Auxiliary REX Inputs,
Latch Integrity, Bond Sensor, or other general
purpose functions
Flash Memory for easy upgrades•
Powered from Controller (standard) or •
optional standalone power supply
Status Indicator LEDs for power, •
communication, and relay position
Quick Disconnect Connectors•
Locking Metal Enclosure (optional without)•
Reduces wiring by providing capability to move •
door management functions to the door location
The NXT-4D Input/Output Expansion Module provides functionality to any Doors NetXtreme
access control system by adding auxiliary I/O that can be used for additional access control
functionality, monitoring non-reader doors or other devices, and creating powerful action
sequences by linking input triggers to outputs. The module can be connected anywhere
along the RS-485 trunk/buss, most commonly at the controller or near a reader. One module
can be added per trunk, allowing up to an extra 8 inputs and 8 outputs on an NXT-2D
Controller and an extra 16 inputs and 16 outputs on an NXT-4D Controller.
The module’s relays are re-assignable and interchangeable with the main controller’s relays.
The module can be mounted next to the door providing local door control and local door
alarm functions while minimizing the cable bundle from door to controller. The unit also has
a port to plug in an NXT-RM3 Reader Interface Module to allow Keri MS reader signals to be
sent down the RS-485 line.