Fangrui Product Details Please Note: Zigbee Dimmer Switch Must Be Used With A Zigbee Gateway! It Cannot Be Used Without A Zigbee Gateway, Thank You! Zigbee Dimmer Switch Module: App Remote Control:control The Switch Anywhere/anytime Via Phone App Voice Control:simply Give A Voice To Or Home To Control Your Devices. Timing/countdown/schedule:smart And Diy Your To Maximum Extend Stepless Dimming:dim Your Lamp Brigntness From To For Different Scene:sleeping,working,watching Movie, Etc Group-control Function:multi Dimmer Switch In Different Room Can Be Set In A Group Realize Group Control Function. Family Share Function:create A Smart Home Together With Your Family Member Easy To Install:compatible With Of Installation Box Material: Plastic Colour: Yellow Specification: 2ch Package Contents: 1 X Dimmer Switch Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measureme