Based on this product's specifications, here are some alternatives and similar models
Surface-Mounted Enclosure Elfon OP-ON2A-G for Optima series, model OP-ON2A-G
Summary description:
Elfon OP-ON2A-G is a surface-mounted enclosure from the Optima series designed to house electrical or electronic modules. As a dedicated mounting box, it provides a protective casing for devices during surface installation, enabling secure fixation and cable entry. Suitable for indoor installations where a compact, wall-mounted enclosure is required for controllers, sensors, or small power units.