Product features 1. High lumen efficiency up to 105~120 lm/w, high cri up to 80ra. 2. High power factor up to 0.97, low thd which is below 15% . 3. Ip rating: ip65. 4. Ik rate: ik08 5. Optional dimming function (1-10vdc or pwm signal or resistor) 6. 50000 hours lifespan . 7. Working enviroment: -40?~+50? & 10%~90%rh