Maryland Statutes
Part III - Required Denials for Specific Information
Section 4-339 - Alarm or Security System

(a)    Except as provided in subsection (b) of this section, a custodian shall deny inspection of the part of a public record that identifies or contains personal information about a person, including a commercial entity, that maintains an alarm or security system.
    (b)    A custodian shall allow inspection by:
        (1)    the person in interest;
        (2)    an alarm or security system company if the company can document that it currently provides alarm or security services to the person in interest;
        (3)    law enforcement personnel; and
        (4)    emergency services personnel, including:
            (i)    a career firefighter;
            (ii)    an emergency medical services provider, as defined in § 13–516 of the Education Article;
            (iii)    a rescue squad employee; and
            (iv)    a volunteer firefighter, a rescue squad member, or an advanced life support unit member.