Based on this product's specifications, here are some alternatives and similar models
Assembly Kit D-Sub 9 pin female to RJ12 6P/6C DeLOCK 66759
Summary description:
The DeLOCK D-Sub 9 pin female to RJ12 6P/6C assembly kit allows for easy connection between devices. It features a D-Sub 9 pin female connector and an RJ12 6P/6C female connector, both in a sleek grey color. This kit is ideal for various applications requiring reliable data transmission and is designed for durability and ease of use.