What does the 3‑ to 4‑digit code on my product mean?

The 3- to 4-digit code on the product is the so-called LOT code. It is a batch code that allows the product to be clearly assigned to a specific production batch.

The LOT code is printed directly on the product and is used for traceability, quality control and for support and service requests.

Depending on the product type, the LOT code is printed in different locations:

• On plug-in relays, the LOT code is printed on the top of the product.
• On other products, the LOT code is part of the side marking or printed on the rear side.
• On products for DIN rail mounting, the LOT code is usually printed on the rear side.