(a) In this subtitle the following words have the meanings indicated. (b) 'Long–life battery' means a nonrechargeable, nonreplaceable primary battery that is capable of operating a smoke alarm for at least 10 years in the normal condition. (c) 'Sleeping area' means a space that includes one or more sleeping rooms and a hall or common area immediately adjacent to any sleeping room. (d) 'Sleeping room' means an enclosed room with a bed arranged to be used as a bedroom. (e) 'Smoke alarm' means a single or multiple station device that detects visible or invisible products of combustion and includes a built–in internal alarm signal. (f) 'Smoke detector' means a system–connected smoke sensing device tied to a fire alarm control panel or a household fire warning panel.
Maryland Legal Code