Customer FAQ: 1. Is the device only compatible with dimmable LED lamps Answer: Yes, dimmers are only suitable for adjusting the brightness of LEDsdimmable, incandescent lamps and halogen lamps. Note: This item only applies to dimmable lamps above 5W, otherwise it will flicker. 2. Why is it flickering after connecting the LED light Answer: Your fixture is not dimmable or compatible with post-cut dimmers. 3. Is the ignition response time too long Answer: The dimmer has a built-in soft start function and the fade time is about 3S. 4. Why do completely silent ceiling lights start to buzz when controlled by a dimmer Answer: The lamps are not dimmable 5. The light flickers and is unstable when fully bright Answer: The dimming range of the lamp is too small