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    Linear AM-CRI Card Reader Interface — Specification

    September 08, 2026 1 min read

    Product specification for the Linear AM-CRI Card Reader Interface, supporting Wiegand card readers.

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    Full text manual (for reference)

    Product specification for the Linear AM-CRI Card Reader Interface — allows a Linear access control system to support up to two 26- or 31-bit Wiegand card reader devices.

    Overview

    The AM-CRI card reader interface is used to equip a Linear access control system with one or two Wiegand devices. It supports up to two 26- or 31-bit Wiegand input devices from any manufacturer, permitting easy interconnection of card readers, proximity readers, or other devices that use this industry-standard interface.

    The AM-CRI mounts near the readers and connects to the system controller through a six-wire cable. Power is supplied to the interface and the reader(s) either from the controller, or from an external source for locally powered readers.

    Features

    • For equipping a Linear access control system with one or two Wiegand devices.
    • Card reader interface can be used with up to two 26- or 31-bit Wiegand input devices.
    • Power supplied by the system controller, or from an external source for locally powered readers.

    General Specifications

    Spec Value
    Power Supplied by an AM/II or Telephone Entry controller, or external power for locally powered readers; jumper selectable
    Capacity Up to two 26- or 31-bit Wiegand devices; two internal rotary switches select device address
    Wiring — AM-CRI to controller Up to 300 ft. with BELDEN 9931 (24 AWG); up to 500 ft. with WEICO 9405 or equivalent (20 AWG)
    Wiring — Reader to AM-CRI Six wires for two LED readers; five wires for one LED reader