ALOA ICPL Practice Questions - ALOA Institutional Certified Professional Locksmith Exam

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An institutional door uses an electric strike with a 12 VDC continuous-duty coil. What is the most common reason a properly wired strike chatters or buzzes loudly when energized?

AC voltage applied to a DC-only coil Strike installed upside down Hinge backset out of tolerance Latch bolt too long for the keeper

Correct Answer:

AC voltage applied to a DC-only coil

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