Md. Code, Criminal Law § 9–611

(a) In this section, “audible alarm system” means an alarm system that, when activated, emits an audible noise from an annunciator.

(b) An audible alarm system shall be equipped to:

(1) automatically silence the annunciator within 30 minutes after activation; and

(2) allow an accidental or negligent activation to be halted or reset.

(c) An alarm system contractor may not sell, lease, rent, or offer to sell, lease, or rent an audible alarm system that does not comply with the requirements of this section.

(d) A person who violates this section is subject to a civil penalty of $100 for each violation.