Based on this product's specifications, here are some alternatives and similar models
Serial Cable DeLOCK RS-232 D-Sub 9 female to female null modem 87278
Summary description:
The DeLOCK Serial Cable RS-232 features a 1 m length and DB-9 connectors, designed for full handshaking. Its narrow plug housing ensures compatibility with various devices. The cable diameter is 5 mm, making it flexible yet durable. Ideal for connecting devices that require a null modem configuration, this cable is perfect for reliable data transmission.