ML Flat Plate 3 Gang 2 Way 10-200W (5-150W LED) Trailing Edge Dimmer - Brushed Brass Indoor Lighting An intermediate switch is used

An intermediate switch is used when you have three switches controlling one light

40-400W for incandescent lamps

preventing the appliance from being turned on accidentally - for example

one at top of the stairs and one at the end of the landing

Mounting box depth: 25-35mm dependent on wiring conditions

ML Flat Plate 3 Gang 2 Way 10-200W (5-150W LED) Trailing Edge Dimmer - Brushed Brass Indoor Lighting An intermediate switch is usedPerfect finishing touch to any modern home, ML Flat Plate low profile metal design with matching dimmer cap. 10 200W Incandescent 5 150W LED 2 way Push on off Trailing edge dimmer technology Certified to EN 60669 2 Minimum mounting box depth: 25mm IP20 230V 50Hz V HEIGHT 87. 5 mm WIDTH 147. 5 mm PROJECTION 2. 5 mm MIN. MOUNTING BOX DEPTH 25mm