FAQ

|Auto Switches

What do the numbers and/or letters after the auto switch part number on the auto switch body indicate?

The numbers and letters indicate the year and month of production and the production lot of the solid state auto switch.
They are not related to the auto switch model.
Note 1) For solid state auto switches, the 2 numbers indicate the year and month of production, and the following 3 letters indicate the production lot.
Note 2) The letters may or may not have a rectangle around them.
Note 3) The production lot of reed auto switches is indicated in numbers instead of letters.
Note 4) For some special order products, the switch part number is followed by additional numbers and letters.