About PWM output frequency, our 3.0 version of UL approved dimmable and non-dimmable led power supplies are improved to be 20000Hz. For this series, we have slim triac driver, led driver and metal box integrated, led power supply with junction box separate three version.

They are all high PF>0.95, high power factor>90%. Long warranty years with 7 years. Our UL certificate 3.0 version are compatible with leading edge and trailing edge dimmers, such as Lutron, LEVITION which are very famous in North America and Europe markets. Dimming range is 0-100% with flicker free. Protection of short-circuit. overload, over voltage, over current and reserve polarity. All of our UL/cUL FCC, Class p ,Class 2,type HL led power supplies don’t have minimum load limited.

Regarding our ETL approved 2.0 series, the PWM output frequency only has 800Hz not 20000Hz. They are 5 years warranty. Driver and junction box is separated. So you need high PWM output frequency for dimmable led power supply, you can choose our UL listed led drivers.