Based on this product's specifications, here are some alternatives and similar models
Surface-Mount Enclosure Elfon OPTIMA OP-ON2B-G — model OP-ON2B-G
Summary description:
Elfon OPTIMA OP-ON2B-G is a surface-mount enclosure designed for housing electronic modules and installation components. As model OP-ON2B-G, it provides a protective casing for devices mounted on walls or flat surfaces, facilitating neat cable routing and secure component placement. Suitable for small control units, access panels, alarm modules and similar low-voltage installations.