Maryland Criminal Law Section 9-607
§ 9-607.
  (a)   In this part the following words have the meanings indicated.
  (b)   "Alarm system" means a burglary alarm system, robbery alarm system, or automatic fire alarm system.
  (c)   (1)   "Alarm system contractor" means a person who installs, maintains, monitors, alters, or services alarm systems.
    (2)   "Alarm system contractor" does not include a person who only manufactures or sells alarm systems.
  (d)   "Alarm user" means:
    (1)   a person in control of an alarm system within, on, or around any building, structure, facility, or site; or
    (2)   the owner or lessee of an alarm system.
  (e)   (1)   "False alarm" means a request for immediate assistance from a law enforcement unit or fire department regardless of cause that is not in response to an actual emergency situation or threatened suggested criminal activity.
    (2)   "False alarm" includes:
      (i)   a negligently or accidentally activated signal;
      (ii)   a signal that is activated as the result of faulty, malfunctioning, or improperly installed or maintained equipment; and
      (iii)   a signal that is purposely activated in a nonemergency situation.
    (3)   "False alarm" does not include:
      (i)   a signal activated by unusually severe weather conditions or other causes beyond the control of the alarm user or alarm system contractor; or
      (ii)   a signal activated within 60 days after a new installation of an alarm system.
  (f)   "Law enforcement unit" means the Department of State Police, the police department of a county or municipal corporation, and a sheriff's department or other governmental law enforcement unit having employees authorized to make arrests.
  (g)   "Signal" means the activation of an alarm system that requests a response by a law enforcement unit or a fire department.