This is a dual display digital counter that can be used as a industrial counter to count the quantity of objects in a single batch and the production line, and also can be used as length counter. It is widely applied in machine, light industry, electronic, food, package, leather, cloth weaving industry for counting, length, batch counting. Specifications: Material: ABS Voltage: 90~265V AC/DC Auxiliary Power: 24V DC Input: Pulse Signal: Square Wave and Sine Wave: 5VH30V 0L2V up edge active Input Impedance: 10K Counting Speed: 30/5000CPS Counting Range: -199999 xff5e;999999 Preset Range: 0.00001-999999 Response speed: switch type input 0~5000hz, incremental encoder input 0~2000hz Accuracy: 0.1%F.S Output: 2 Relay Contact Output Environment Temperature: 0 xff5e;50 Storage Temperature: -10 xff5e;60 Environment Humidity: 35 xff5e;85%RH Insulation Resistance: 10M Power Consumption: 5W Contact Edge: Up edge active Item Size: 9.5 * 8.5 * 4.7cm / 3.74 * 3.35 * 1.85in Item Weight: 167g / 5.89oz Package Weight: 203g / 7.16oz Package Size: 11 * 10.1 * 5.5cm / 4.33 * 3.98 * 2.17in Packing List: 1 * Counter 2 * Brackets 1 * User Manual (English)