Same lock function with a different key operation.
The ND78 and ND98 functions have a 180-degree key rotation that locks or unlocks, unlike the ND75 and ND95 which have a 360-degree rotation to lock and unlock.
The ND78 and the ND98 (Vandlgard function) were introduced to help improve the ease of lockdowns in school settings.
The ND75 / ND95 was discontinued effective June 7th, 2024, and was replaced by the ND78 /ND98
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