... auto-sensor will automatically turn down at 5W(adjustable) for energy saving. A.Without any movement 30% brightness 5W ... factor >0.92 Lifespan: ≥30000H Material: AL (good quality for heat dissipation) +PC Working temperature: -20~+60°C 3. ... air machine, automobile horn, ambient temperature interruption. 4. Applications:Parking lot, basement, elevator, passageway, washroom, park,bus station, villa ...