shocking company, purchased a dimmer switch which Ledkia recommended, but it wouldn't switch off the lights. I used a different Dimmer from B&Q and that worked fine. See attached video. Ledkia soay they have a money back Guarantee but they will do everything possible to avoid giving a refund - like asking for a video of the item not working. Even when you send this they will take weeks ,and then ask for more photos and then cancel the refund (its all online via their account system) - not to mention the return fee of 15.99 for a small light switch! AVOID and don't fall for fancy website or the UK number - they are based in Spain!!!!!!