... or encoder 1. Features of IBEST Digital Sensor Preset Counter:* Preset batch counter, soft buttons operation, easily operate* Dual line 4 ... and tansistor output; optional control output: N, F, C, R* Counter speed: 30Hz/300Hz/1000Hz/5000Hz,selectable by software* Modulus:0 ... )WELCOME TO CONTACT US!IBEST ELECTRICAL CO.,LTD IBEST CRN Series , Various Dimension , Preset Counter Use With Sensor or Encoder