The GU Secury Automatic TENF 6-37423-45-0-1 has two automatically engaging auxiliary bolts and a separately key-operated central main-case deadbolt. The retained specification is 45mm backset, 92mm PZ centres and a 20mm faceplate.
The TENF daytime-release arrangement requires a separately supplied matching spring-loaded central latch release. Auxiliary-bolt retention alone does not provide unrestricted passage while the central latch is still engaged. Specify the correct release, spring strength, strike and profile arrangement before using the mode.
Any motor conversion needs a manufacturer-approved motor/interface for this exact TENF revision, the matching wiring and power equipment, and an appropriate installation plan. The GU brand or a Universal Motor name alone does not establish compatibility with every old lock or current panic/electrical generation.
Replacement fit: compare the exact supplied reference and generation, backset, PZ centres, follower/spindle arrangement, faceplate profile, case routing, fixings, locking-point positions and frame keeps. Shared GU branding or 92mm centres alone are not a direct-fit guarantee. Spindle and cylinder selection must also match the furniture, door thickness and required outside operation.