Hello guys I will show how create a 3dsmax 3d 120V Appliance Switch model tutorial.
I have used following techniques shown below in this 3ds max tutorial.

[1]-Click on the chamfer box button and create chamfer box with the following size  
    Place like me

[2]-Now create three rectangles with the following size and apply the extrude modifier with the amount of 8.5
     Place the rectangles like me

[3]-Now switch to the boolean the now boolean the rectangle like me

[4]-Create two cylinders and now similarly boolean the cylinders like this

[5]-This time create chamfer cylinder and box now place like me

[6]-Now again switch to the boolean and now boolean the box like me

[7]-This is my material window

[8]-Set the skylight like this with the following parameters

[9]-This is the final image of 120V Appliance Switch
     thanks for watching