Based on this product's specifications, here are some alternatives and similar models
Steckdosentester Schutzkontakt Benning SDT 1 (MPN 020053) — socket tester for protective earth and wiring checks
Summary description:
Benning SDT 1 Steckdosentester Schutzkontakt (MPN 020053) is a compact socket tester designed to check protective earth (PE) and basic wiring conditions in mains outlets. It identifies presence of earth, correct phase/neutral wiring and typical wiring faults at standard protective-contact sockets. Suitable for electricians and facility maintenance personnel for quick on-site outlet verification.