Building egress lighting apparatus, system, method and computer program product

An egress luminaire comprising:

• a housing configured to be positioned above at least one distal egress path and having a first receptacle and a second receptacle;
• a light module that includes a lamp, an optical lens that directs light from the lamp in a predetermined direction, and an interface that is compatible with the first receptacle and the second receptacle, under a condition the light module is connected to one of the first receptacle or the second receptacle, the light module remains horizontally disposed during operation so as to illuminate the distal path of egress, rotatable about a vertical axis thereof, and receives at least one of power or power and data therefrom, wherein
• the first receptable and the second receptacle are each sized to couple to at least one of another light module or a non-lit power consuming device that have an interface of a common form as the interface of the light module,
• the light module comprises a dedicated linear pattern optical lens disposed over the lamp so as to direct light from the lamp in the predetermined direction, the light module is configured to vary at least one of a transverse beam angle width, a number of active lamps, and/or an input power according to a mounting height of the housing,
• the light module is further configured to maintain no less than a predetermined minimum light level of an elongated light beam for a predetermined time duration at floor level along the at least one distal egress path below the housing, the transverse beam angle width being narrower under a condition the housing is mounted higher than another condition where the housing is mounted at a lower height with respect to the floor level, and
• once mounted, the light module requires only lateral rotation to illuminate the at least one distal egress path.