... easily operate* Dual line 4 or 6 LED display* Counting mode: counting Up or counting down, ... and rotary encoder in the fields of machinery,light industrial, packing and packaging,food and beverage.* ... input, transducer inputInput signals voltagelow voltage:0~2V, high voltage: 4~30V, input resistance: 5KΩCounting ... ELECTRICAL CO.,LTD IBEST Dual Light 6 Digit Display , 48*48mm Digital Counter