The medical call system consists of a master unit, corridor display screen, bedside extension, and emergency call function. The master unit is integrated with a patient list, featuring a perpetual calendar, bed call indicator lights, and a digital bed number display window. It boasts an ultra-thin shell design, with a very delicate appearance, and can be hung on the wall or placed on a desk. The extension units utilize a new coding circuit for numbering, allowing bed number changes simply by replacing the coding chip. The shell is designed with a full-plastic clip-on structure, suitable for any form of installation.;The extension lines are wired in a pressure line configuration, ensuring a seamless connection within the room without any interruptions. They are safer, more convenient to use, install, and maintain.