KJT speed control switch products are mainly developed for the actual needs of the customer site, the product with a wide range of power, 24VDC-110VAC-220VAC can be applied (different voltage levels configured with different voltage intermediate relay), to bring the user procurement uniformity, convenient installation, interchangeability of the advantages of good. The products of the motor and mechanical transmission devices often blocked, card rotation, overload, slow rotation, belt slippage, transmission chain (belt) off, drive shaft breakage and other electrical and technological failures can be effective and timely treatment. Can play a role in safeguarding production and maintaining equipment.