Light projection apparatus; optical apparatus and instruments; eyepieces; refractors; light-emitting electronic pointers; alarms; acoustic [sound] alarms; whistle alarms; luminous beacons; flashing lights [light signals]; optical lamps / optical lanterns; signaling panels, luminous or mechanical; luminous or mechanical signals; sirens; bells [warning apparatus]; protection devices for personal use against accidents; image projection apparatus; apparatus for projecting a contrasting light/dark image; light projection apparatus for illuminating an area of interest, for example a pedestrian crossing, a level crossing, a landing zone for a helicopter; optical apparatus for safety of lifting operations; optical apparatus to be installed on lifting apparatus; projection apparatus for safety on construction sites.

Installation, maintenance and repair of optical apparatus for safety of lifting operations; installation, maintenance and repair of optical apparatus on lifting apparatus for safety of lifting operations; installation, maintenance and repair of projection apparatus for safety on construction sites.