Fantasia wall mounted lighting dimmer requires twin and earth cabling and fits into a standard 35mm deep single gang box. Maximum power rating is 200 watts and one controller is required per fan. Please note - it is not possible to wire a fan motor into a standard variable dimmer switch. Only a Fantasia stepped speed controller can be used to operate the fan speeds from the wall. This Fantasia LED Lighting Dimmer Wall Control is only suitable for use with LED bulbs.