... order: 5 pieces >>Overview JC Series Electroinc Counter is a high accurate counter, which adopts the single chip micro-processor with ... power cut, strong anti-disturbance capability, pretty apprarance, etc. Counter can be used in the industries of packing, printing, pharmacy ... -contact signal:For approach switch, photoelectric switch, etc. the frequency can be selected in either high(1000 times/s) or ...