Based on this product's specifications, here are some alternatives and similar models
Flush button Alca plast M372 – dual-flush actuator plate for toilet cistern
Summary description:
Alca plast M372 is a flush button (actuator) designed for toilet cisterns. It provides user control of flushing via a wall-mounted or top-mounted actuator plate, suitable for typical concealed or exposed cistern installations. The unit serves as the user interface to initiate flush cycles and is compatible with compatible Alca plast cistern mechanisms.