Based on this product's specifications, here are some alternatives and similar models
Controller TECH ST-27I (TSST27IBK) for 2 pumps — for central heating, domestic hot water or underfloor heating, black
Summary description:
TECH ST-27I controller (model TSST27IBK) is a control unit designed for managing two pumps used in central heating (CO), domestic hot water (CWU) or underfloor heating systems. The unit coordinates pump operation to ensure proper circulation and switching between heating circuits. Supplied in black, it is intended for installation in residential or light-commercial heating systems where two independent pump outputs are required.