Based on this product's specifications, here are some alternatives and similar models
Power Adapter for TEESA Blood Pressure Monitor TSA8045 (MPN 5544) — Replacement Power Supply
Summary description:
Replacement power adapter compatible with the TEESA TSA8045 blood pressure monitor. Manufacturer part MPN 5544 (EAN 5901890039277). Provides mains power to the TSA8045 device as an alternative to batteries, ensuring continuous operation at home or in clinical settings. Ideal for users who need reliable external power for regular measurements and long-term monitoring.