Housing: Die-cast Aluminum; Mounting ring: Grey; Installation: Hook/Pole/Bracket; Dimensions: Φ408×82mm; Ceiling cutouts: /; Beam angle: 60°*100°; Lamp(s): LED; Power: 155W; Efficacy：155Lm/w Total luminous flux of luminaire: 24025lm; Power Factor: 0.95; Mains voltage: AC100-240V; Colour temperature: 4000K; Colour rendering: Ra70; UGR: / IP/IK Grade: IP66/ IK08; Class of protection I; Control System: DALI/ BLE Service life: 70,000h at 70% luminous flux;