Ⅰ: Code of product series: three-digit

      119: series 119 encoder

Ⅱ: Code of product height: double-digit

      31: distance btw the bottom of base and

      shaft top is 31mm.

Ⅲ: Output wave: double-digit

      12: 24 detents, 12 pulses

      00: 24 detents, cross connection and

      disconnection at each detent

      24: 24 detents, 24 pulses

Ⅳ: Code of product life: single-digit

      0: 50,000 times   1: 100,000 times

Ⅴ: Code of switch: single-digit

      0: without switch     1: with switch

Ⅵ: Operating force of switch: single-digit

      0: without switch     1: 160±60gf

      2: 250±80gf

Ⅶ: Derivative code: double-digit

      00: without special items

Ⅷ: Package: single-digit

      0=plastic bag  1=shrinked plastic package

      2=tape package          3=tube package

      4=foam package         5=undetermined