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Why is my Trilogy door lock constantly beeping after a battery change?

Answer:
When changing the batteries in your Trilogy lock, ensure the correct polarity with each battery.  If a battery is installed with incorrect polarity, the lock might seem to power up correctly but in fact will not receive the correct...

With my model (P)DL4500 "Residential / Privacy" lock, how do I enable Total User Lockout Mode using the lock key cylinder?

Answer:
The "Privacy" feature allows access through the door to individuals with User Codes and is typically used for rooms needing privacy from others such as bathrooms, dorms, meeting rooms and sleeping rooms in hospitals.  When a model DL4500 or...

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