... 48*48, 72*72 and 48*96mm 2. Used with sensor or encoder 1. Features of IBEST Digital Sensor Preset Counter:* ... 72X72mm , 48X96mm* Application: can be used with photoelectric sensor, proximity switch, and rotary encoder in the fields of machinery,light industrial, packing ... high voltage: 4~30V, input resistance: 5KΩCounting modeCounting Up or counting down, counting up and downOutput modeN, F, C, ...