LED power supplier: 1.good materials and skilled craft. 2.wide input voltage. 3. 2 years warranty. LED power supply:SpecificationsInput voltage: AC110 ... Safety Standard: Design refer to UL8750, TUV EN61347-1, EN61347-2-13 (except for 48V) EMC Standard: EN55015, EN55022 Class B, EN61000 ... -3-2, -3-3, EN61000-4-2, 3, 4, 5, 6, 8, 11, EN61547 Standard ...