Keri Systems NXT 4x4 Rev Product Guide 4x4Data Sheet F
User Manual: Keri Systems NXT-4x4 Product Guide Product Guide
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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-4x4 Input/Output Expansion Module provides functionality to any Doors.NET™ 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. 2305 Bering Drive San Jose, California 95131 408-435-8400 Toll Free: 800-260-5265 Fax: 408-577-1792 NXT 4x4 - Input/Output Expansion Module DATA SHEET, Page 2 of 2 Specifications: Size (Enclosure): 8” H x 7” W x 2.75” D (20.32 cm x 17.78 cm x 6.98 cm) Size (PC Board): 5.25” H x 3.10” W x 1” D (13.33 cm x 7.87 cm x 2.54 cm) Weight (In Enclosure): 2.5 Lbs (1.14 Kgs) Input Voltage: + 12 VDC nom. (10 - 14 VDC) Current Draw: 250 mA typical Inputs: 4 general purpose Inputs or configurable in software to: - Door Contact Switch - Request to Exit - Bond Sensor Temperature / Humidity: -40° F to 140° F (-40° C to 60° C) 0-90% Non Condensing Communication: To Controller: RS-485 Lithium Battery: 5 years Memory Retention Outputs: 4 general purpose Outputs/Relays 1.0 amp (24 VDC max.) dry circuit Presented By: PN: 01794-001 Rev. F
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