Active Safety’s Series 210 Stair Tread Marker is a durable aluminum extrusion that installs directly onto the leading edge of new and existing stairs in building exit path stairwells that can safely accommodate a flat profile. Several model variations provide for a high quality installation consistent with building architecture and occupant traffic patterns. Automatic operation requires only 1 footcandle of charging illumination under normal conditions. Long life and near zero maintenance ensure the system will always be available to support tenant safety during normal operations and emergencies.