... 2. Metal support , no deformation 3.Well-designed knob provides soft operation Full-range of 1-4 gangs 1 or 2 way switchFunction: one way ... , two way depended on customer' ... cartonAdvantage: 15 years lifrtime, easy to installation full range of wall switch&socket, stylish designOEM&ODM are ... too. A Series 3 gang 1(2) way Switch