1 Features: 1, integrated circuit control com whole action. 2. Imported photoelectric switch control with cutting, long life, working voltage DC12V, all the switching current is very small, about less than is 3mA. 3, pure DC, and all the control section voltage less than 30V, protect the PC board, fans and other difficult to damage. 4, packing speed and just 1.5 seconds. 5, tight and strong, the loose packing of the product is not easy