The meter 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, light industry and other industries. It can be connected with encoder, length counting wheel, proximity switch, photoelectric switch, optical sensor, sensor, capacitance switch, etc. Input and output are optically isolated. The alarm value can be set. 6-digit LED display. Material:plastic colour:Black Package Contents: 1 x counter 2 x bracket 1 x English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.