Based on this product's specifications, here are some alternatives and similar models
Remote Flash Trigger KAISER 7016 — wired/wireless compatibility, simple trigger for external studio and speedlight flashes
Summary description:
KAISER Fernauslöser (model 7016) is a remote trigger designed to release external flashes. It provides a straightforward way to activate off-camera or studio flashes from a distance, simplifying multi-flash setups and synchronized shooting. The unit supports basic trigger functions for photographers needing reliable manual flash control in portrait, product, and event photography.