The main unit and the patient list are combined into one, and are equipped with a perpetual calendar, a bed call indicator, and a bed digital display window. The shell is ultra-thin design, and the shape is particularly exquisite. It can be wall-mounted and placed on the desktop at will; the extension adopts the latest coding circuit number and changes the bed You only need to replace the encoding chip. The shell adopts an all-plastic outer buckle design, which is suitable for any form of installation and matching; the extension is an internal pressure wire connection, which realizes a disconnected connection in the room. It is safer and more convenient to use, install and maintain.