Peristaltic pump is a precision fluid delivery equipment, and external signal control is its basic function. Most peristaltic pumps can be controlled by external signals. Common control signals include the following：

0-5V，0-10V;

4-20mA analog input control;

0-10kHz frequency pulse control;

Rongbai constant current pumps, peristaltic pumps, injection pumps, filling systems and other precision pumps all support RS485 communication; different signals need to be matched with corresponding modules to achieve corresponding signal control.