Based on this product's specifications, here are some alternatives and similar models
Replacement motherboard for Roborock H6 vacuum cleaner accessory, model 9.02.0164
Summary description:
Replacement motherboard designed for the Roborock H6 vacuum cleaner accessory (MPN 9.02.0164). This original-equivalent electronic board performs control and communication functions within the H6 unit. Intended for repair or refurbishment of H6 devices to restore functionality. Suitable for technicians and users replacing a faulty main board to bring the vacuum back into service.