... Long Lifespan 40W LED Driver Power Supply Specification: 1.Certification:CE CCC UL ROHS2. Input voltage: 110~240V ... 10. constant output current, low ripple. ensure the LED make use of security, stability ,improve LED lighting ... aging test .12. over loading protection, over-voltage protection, over-current protection, primary, secondary isolated. ... for visiting ! Long Lifespan 40W LED Driver Power Supply