COB series button adopts full-plastic case. The appearance is beautiful and the structure is reasonable. The product, which is equipped with rubber cable sheath and waterproof ealing strips, is provided with good dustproof and rainproof performance.
All the other buttons are with function of automatic reset and mechanical interlock structure realizing optimistic and reverse controlling except "on" button of general circuit switch is of function of automatic lock. It not only predigests the circuits, but also efficiently protects the circuits and operation of equipment. Besides, in order to avoid circuits failure more reliably, the "off" button can switch of the general power supply.