British General Nexus Metal 1-Gang 2-Way LED Dimmer Switch Matt Black (39414)

Hi JonnyInBristol, This is a Leading Edge type dimmer, so any Leading Edge Dimmable lamps (LED or otherwise) should work happily with it. Currently in the marketplace there seems to be a roughly 50/50 split between Leading and Trailing Edge dimmable LED lamps, but this may change as current models cease production and are superseded by alternatives.

Hi jollyjcm, This is a Leading Edge dimmer, so it is unlikely that specifically Trailing Edge dimmable lamps are going to behave themselves if controlled by it.

Hi Ella132, Yes, all BG dimmers are Triac type dimmers (rather than purely resistive).

Hi KlosDIY, Strictly speaking all dimmed circuits buzz, but it is normally outside of the range of human hearing in both volume and frequency. A strong audible buzzing is normally an indication of an inappropriate load, so either the dimmer is not set into LED mode (by turning the potentiometer on the rear fully anti-clockwise), the lighting is outside of the normal LED load range of 5-50W, or the lighting is designed specifically for Trailing Edge dimming where this is a Leading Edge type dimmer (so the method of dimming required is different).

Hi RetreatNorth, The dimmer module which British General currently manufactures and uses has a potentiometer on the rear which, when turned fully anti-clockwise, will put the module into a 5-50W Leading Edge type LED dimming mode.