About 1 way and 2 way 1 way is a switch to control a light (for example bathroom, kitchen). 2 way is two switches controlling one light at different light positions (for example a stairwell, one upstairs and one downstairs respectively controlling the same light)Note 2 way can replace 1 way. If you are confused, you can contact us, or Choose 2 waySpecificationBrand PSSRISEType 16 A 1/2/3/4 gang switchColor Black/White/Gold/GraySize of Panel 86 mm*86 mmInstallation distance 60 mmRated Current 16 AVoltage AC 110~250 V / 50~60 HzUSB 0Wiring method standard wiringMaterial Crystal Tempered Glass PanelApplication Residential / General PurposeFeatures Perfect outlook and fashion designed High quality materials, rounded corners, delicate edges,can be matched with different styles of scene Toughened glass,high hardnessthe panel is made of high strength toughened glass,fire retardant and durable. High quality steel frame,firm and safeSelected high quality steel frame,firm and durable wear,rust and corrosion resistance,use at ease. Tin phosphorus bronze,anti magnetic and anti wearSelected Tin phosphor bronze sheet forswitch socket , has good electrical conductivity,Package IncludedPackage Included