Ⅰ: Product series: three-digit   

      165:  series 165 micro switch

Ⅱ: Rating: double-digit

      (in accordance with IEC61058S)

Ⅲ: Used temperature range: single-digit

    1: 25T85    2: 25T125

Ⅳ: Loop: single-digit

   1: SPDT  

   2: SPST-NC  3: SPST-NO

Ⅴ: Type of terminal: single-digit

      1: soldering terminal

      2: PCB terminal, left-toward

      3: PCB terminal, right-toward

      4: type 110 quick-connect terminal

      5: PCB terminal, vertical

Ⅵ: Type of handle: double-digit

      00: without handle     01: 1# handle

      02: 2# handle

Ⅶ: Type of handle assembly: single-digit

      0: without handle 1: external located

      2: internal located

Ⅷ: Operating force: double-digit

      (at the condition of no handle)

Ⅸ: Derivative code: double-digit

      Including the below, but not limited.

      1: same terminal type or other unconventional

          structures

      2: different operation position

      3: color of button or housing

      4: differente electroplating

      5: differente contact

Ⅹ: Type of package: single-digit

      0=plastic bag        

      1=shrinked plastic package

      2=tape package  

      3=tube package

      4=foam package 

      5=undetermined