1, the height of the switch panel: Under normal circumstances the general height is no problem, but you have to consider is that if you have both hands have things, how do you like to turn on the lights, for example, when I hold something in both hands, I like Use the forehead to turn on the lights, then I designed the height of the switch should be suitable for my forehead can be opened to the position, and some people like to use elbows to turn on the lights, then he designed the height should adapt to turning on elbows. 2, each room switch, to be set at the door you can easily reach the place by hand, if the design is too much on the inside, you have to go forward in the dark one or two steps to open, it is likely to hit Pour some invisible things. 3, most people leave the socket location is very low, but also have to consider some of the high retention of the socket, such as the socket for the electric iron, it should be about the height of your home's ironing board. 4. At least one jack in each room should not be blocked by anything. This will make it much easier to use electric appliances such as vacuum cleaners. Decoration experience switch socket switch socket room electrical
The screw rod is a machine screw (mechanical screw), which is the kind of flat head at the front end. The screw pitch is small and uniform. It is generally used to fasten metal and machine parts.
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Round head machine tooth screw PM
Round head screw with intermedia
Large flat head screw TM
Countersunk screw km
Half countersunk head machine tooth screw OM
Big head screw BM
Thin head machine tooth screw cm
Cup head machine tooth Bolt HM