Description: WiFi Light Switch 220V RF433 Remote Control No Neutrual Wire And Have Neutural Wire 2 Way Control Timer Works With Alexa Google Home.      Feature :  - Variety of colors  The wifi switch has 1 2 3 4Gang , black , white , gray , pink for your choice .  - Two wiring methods  Zero line + live line (N/L) can support 2-way control . ( There must be a neutral line to achieve 2-way ).  Single live wire ( L ) ( The installation capacitor must be connected to the L and N of the L1 lamp , not behind the switch ).  - Application remote control  As long as your smartphone has a 4G or WIFI network , you can control your lights through the ' Tuya Smart or Smart Life ' App .  - Voice control  It is perfectly compatible with Alexa and can be used with Google Home . When your hands are full , use voice commands to turn the lights on / off .  - Timer setting  Set a schedule or timer to turn on / off the lights at night and in the morning , and then when you go home at dusk , you will never return to the dark house . In addition , you can wake up quietly in a predetermined light every morning .  - Security and certification  The wall switch adopts high-quality materials , such as fire-resistant casing , phosphor bronze connection and advanced PC+ tempered glass , which can provide fire and overload protection to protect your family . All our products have passed CE , FCC and RoHS certifications . Do not use any harmful chemicals , please rest assured to use .  - Sharing function  Share the device with your family to eliminate extra connection steps .     Note :  Support most lamps and lanterns . We recommend using LED lights above 5W for L1 . Dimmable lights are not supported .  Bulb Note : 1gang does not support fluorescent lamps and energy-saving lamps , 2 / 3 / 4gang , energy-saving lamps and fluorescent lamps cannot be connected to L1 , ( 1gang ) only supports : LED , tungsten filament lamps.  1 Gang 2 Way means one light can be controled by two switchs , for example , upstair and downstair . That means you need to buy two switch at least .（1Gang）.  There is a neutral wire at home , follow the following operations to connect the wires to achieve dual control functions . This function cannot be achieved without the neutral line ( N line ) .     Specification:   Load Power : 3-500W / gang;  RF working frequency : 433.92MHZ;  Certified standard : IEEE 802.11 b / g / n;  Rated voltage : 110-250V 50-60Hz;     Package Include:   Light switch x 1 , Manual x 1