Long press “SET”until indicator flashes, short press “SET” continuously to select PWM frequency.
Lowest
Flashing slowly
Flashing quickly
Fastest
250Hz
2KHz
4KHz
8KHz
PWM frequency (changing different frequency to solve the noise problem from power adapter).
High frequency only support device with lower wattage, low frequency support device with higher wattage and have better dimming performance. Factory default PWM frequency is 4KHz.