Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
A house usually has several lights,sometimes we only need one light,sometimes we want to open all lights,but it is very trouble to open the lights one by one.But BIG&SMALL SWITCH solve the problem,the big switch control all the lights,and each small switch control each light ,it is so convenient to users.
Meng Luhua Li Ke Xu Wei