The main power switch is an electric control device which is added when the whole machine is in the running process, and the battery is discharged through the outer circuit. At present, the construction machinery and agricultural machinery industry, the vast majority of models have installed power switches. JK series of mechanical power switches, with a strong control, long life, the characteristics of the performance of the. JK451 type auto switch is a mechanical power switch is a long-term work, mainly installed in the Steyr automobile, as the power switch. But can also be installed in all other cars, agricultural vehicles, tractors, internal combustion engine and so on. This product has a variety of color options available to customers, so customer satisfaction