Adding an LE Series Door or Sub Station to an AP-M Answering Station

Updated on May 26th, 2026

This guide covers the process of adding LE Series door and sub stations to an existing AP-M installation.

This station is discontinued and may no longer be supported. These instructions are provided to assist with operation and maintenance, and to guide upgrade paths.

Note: Stainless steel LE Series stations such as the LE-SSR, LE-SS/A, and LE-SS-1G do not require this mod.

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AP-M Operation and Installation Instructions MP-S Instructions Adding External Signaling to an AP-M Answering Station Adding an LE Series Door or Sub Station to an AP-M Answering Station Using an LE Door or Sub Station with an MP-S Answering Station Adding External Signaling to an Existing MP-S Answering Station

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