# Review the 2022 NDEBSi conversion limit before ordering parts > Use the March 2022 NDE service manual's conversion limit as a documented checkpoint, then confirm the current manufacturer-approved path. - Canonical URL: https://update.dsesecurity.com/updates/confirm-ndebsi-hardware-path-before-conversion-parts/ - Publisher: Detection Systems & Engineering (DSE Security) - Author: DSE Security Editorial Team - Published: 2026-10-28T23:23:09+00:00 - Modified: 2026-10-28T23:23:39+00:00 - Last reviewed by DSE: 2026-10-28 - Resource type: Guide - DSE priority: Advisory - Topics: Access Control - Reading time: 3 minutes ## What you need to know Use the March 2022 NDE service manual's conversion limit as a documented checkpoint, then confirm the current manufacturer-approved path. ## Potentially affected NDE80, NDEB and NDEBSi hardware decisions within the scope of the NDE Series service manual, revision 03/22. ## DSE recommendation Confirm the installed variant and obtain a current documented hardware path before approving a parts-based conversion proposal. ## Article Bottom line: DSE recommends confirming the documented hardware path before approving a proposal to convert an installed NDE or NDEB to NDEBSi. Treat the service manual’s dated statement as a specific review checkpoint, then obtain current manufacturer confirmation for the proposed work. ## Source fact: the captured manual rules out a parts conversion The [NDE Series service manual](https://commercial.schlage.com/content/dam/allegion-us-2/web-files/schlage/technical-documents/Schlage_NDE_Series_Service_Manual_015478.pdf), document 015478 revision 03/22, addresses NDE80, NDEB and NDEBSi. Its Ordering NDEBSi section on page 14 says an NDEBSi requirement needs a new lock. It states that upgrading parts to convert a current NDE/NDEB to NDEBSi is not possible in that documented configuration. Read that statement with its March 2022 revision attached. This article does not present it as a new determination that no later manufacturer-approved conversion path could exist. ## What the source does not establish The captured manual does not establish current ordering availability, later conversion kits, software compatibility or a complete credential-support list. It also does not approve a particular replacement assembly for an installed opening. Resolve those questions with current manufacturer documentation and the parties responsible for the access system and door hardware. ## Applicability questions - Which exact NDE variant is installed at each affected opening? - What credential capability is the project requesting, and how will its acceptance be demonstrated? - Does the proposal assume a parts swap, configuration change or complete lock replacement? - Which current manufacturer document authorizes the proposed path? - Who will review the access-system and physical-opening requirements before ordering? ## DSE recommendation: separate the requirement from the proposed part The following steps are DSE recommendations based on the manual’s bounded hardware statement. First record the required access outcome without selecting a conversion kit. Identify the intended credential and the openings involved, then have the access owner define the expected allowed and denied cases. Keep that requirement separate from a supplier’s proposed hardware description so the project can evaluate the proposed path against the actual need. Inventory the installed model labels and relevant configuration through the approved survey process. Compare that inventory with the proposal and the dated service-manual statement. If the proposal relies on a newer conversion option, request its exact manufacturer reference and applicability conditions. Preserve the explanation of why that evidence supersedes or falls outside the captured manual rather than silently disregarding the discrepancy. Have the responsible parties approve the resulting scope before ordering. Record whether the accepted plan is replacement, an expressly documented conversion or further investigation. Keep component identities, required services and acceptance responsibilities in the same decision record; do not approve a generic parts substitution from similar model names alone. ## Verification and evidence Use an approved sample or limited installation to verify the selected path before expanding the work. Confirm the resulting hardware identity against the accepted proposal, then perform the agreed credential and opening checks with their owners. These are proposed acceptance activities, not tests performed for this article. Record the observed results, any rejected or unresolved cases and the authority accepting the outcome. Have the door-hardware owner review any physical change through the applicable project process instead of treating credential recognition as the complete installation acceptance. Retain the installed-model inventory, manual revision, current manufacturer response, approved proposal and acceptance evidence. That record should explain the chosen path without implying that a 2022 manual establishes every present purchasing or compatibility decision. ## Official references - [NDE Series NDE80/NDEB/NDEBSi Service manual](https://commercial.schlage.com/content/dam/allegion-us-2/web-files/schlage/technical-documents/Schlage_NDE_Series_Service_Manual_015478.pdf) — Schlage; document 015478, revision 03/22; page 14, Ordering NDEBSi. Source review completed October 28, 2026. Recheck the official documentation and deployment-specific applicability before a production change. ## Primary reference - Name: Schlage NDE Series NDE80/NDEB/NDEBSi Service manual, revision 03/22 - Authority: commercial.schlage.com - URL: https://commercial.schlage.com/content/dam/allegion-us-2/web-files/schlage/technical-documents/Schlage_NDE_Series_Service_Manual_015478.pdf - Source publication date: Not stated by the source ## Citation and use Preferred citation: “Review the 2022 NDEBSi conversion limit before ordering parts,” DSE Security, https://update.dsesecurity.com/updates/confirm-ndebsi-hardware-path-before-conversion-parts/ Publishing principles: https://update.dsesecurity.com/updates/dse-updates-editorial-methodology/ Usage and citation policy: https://update.dsesecurity.com/usage/ Copyright © 2026 Detection Systems & Engineering. All rights reserved.