Retekess medical calling system is one of the most popular systems on the market due to its cost-effectiveness. The medical calling system is used in hospital emergency rooms, admissions, radiology, pharmacies, laboratories, and other departments. Each patient or bed will have the call button, and nurses or doctors will wear watch receivers, and nurse stations install the LED display. Once someone calls, the nurse station will receive the signal, at the same time the corresponding doctor or nurse will also receive the signal. So that treatment can be taken immediately. Using the medical system, the hospital can not only improve work efficiency but also provide a quiet and comfortable environment.