LED luminaire for installation flat on the ceiling or wall. High lumen output and good efficiency that meets with tough market demands and requires fewer luminaires. IP44 and class II to suit many indoor environments. Easily installed luminaire with a long service life. Integrated motion sensor and adjustable base light function for energy saving lighting of corridors, stairways and other ancillary spaces. Dip-switch for range, dusk control, base light and time delay. Possibility of surface mounted cable routing.