The counter can be used as a counter to count the number of objects and batches in a single batch, or as a length gauge. It is widely used in chemical, machinery, industry and other industries. It can be connected with an encoder, a length counting wheel, a proximity switch, a photoelectric switch, an optical sensor, a sensor, a capacitance switch, etc. The input and output are optically isolated. The alarm value can be set. 6-digit LED display. Material: plastic color: black Package Contents: 3 x counter 6 x bracket 3 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.