Safety is the basis of procurement, and some switches over a long period of time, the internal corrosion of metal components, the switch will gradually insensitive, it can not prevent sparks, easily lead to accidents.
High-quality switch uses of copper core technology, effective anti-rust, good conductivity and contact sensitive, can switch frequently without loosening.
If the switch is a plastic panel, then only advanced PC material, to be able to have high flame retardancy, insulation and impact resistance, easy to change color yellow. Timber failure switch socket, the switch will cause aging, jam, many switch is used without addition retardant PC material, in case of fire is a big risk.
Be sure to have a safety gate to protect children from electric shock.