Switch handle should be light, gentle sense of tight astringent, the sound crisp.

Opening and closing time, the switch in place, should not the middle stranded

Outlet protected doors should jump flexible, without jamming, pull the plug can automatically restore close the jack, will not come into contact with live parts inside.

Switch socket plastic panel surface suitable for a sense of perfect, does not allow any bubbles, cracks, defects, and significant deformation scratch, flash and other defects.

Fasteners card fasten round, no loose phenomenon, wires and terminal connections should be solid and reliable, does not allow loose.

Switch socket ID should be a clear specification

Panel mounting plate securely without loosening, panel and floor by means of tools should be easily demolished, tight astringent and folded installed a difficult phenomenon.