NK Series, WK Series, SK Series and WNK Series Controllers are independently researched and developed by our company to ensure a good running environment for electric power equipment. Imported transducer and new hardware circuit are adopted to eliminate traditional defects and to provide high sensitivity and accurate & reliable control; multiple anti-interference technology is used to strengthen electromagnetic compatibility; the application of spray-bonding craft contributes to strong anti-moisture and anti-corrosion capability; the product, with reasonable structure design, good-looking shape and compact size, has flexible installation methods; and the large output contact capacity ensures reliable performance. Our controllers can be applied to all kinds of switchgears, prefabricated substations, circuit breaker operating mechanism cases, disconnector operating mechanism cases, terminal boxes, load switches and other electric power equipment.