Based on this product's specifications, here are some alternatives and similar models
Dedra Rocker Switch 0-I 230V for DED7521 and DED7522
Summary description:
Replacement black rocker switch for Dedra DED7521 and DED7522 power tools. This 0-I 230V switch is designed for reliable power control and easy operation. It serves as a direct spare part for maintaining the functionality of your equipment. Durable construction ensures long-lasting performance in standard electrical applications.