The WAGO 209-606 WSB marking card is a versatile accessory for WAGO terminal blocks. This card allows for the clear and concise labeling of terminal blocks, improving organization and reducing errors in electrical installations. The card features vertical marking with black numbers, providing excellent visibility. It is designed for snap-on application and is pre-assembled with 10 strips, each containing 10 markers. This system simplifies the marking process and ensures consistent labeling across projects. Ideal for industrial automation, control panels, and electrical distribution systems.