This product is designed to match the electronic control assembly of the old compact electric actuator, installed above the old compact electric actuator while retaining the original junction box. Using a single coil absolute value encoder or potentiometer to collect valve position, combined with an intelligent circuit board to achieve non-invasive cover free debugging and operation. Accept remote control switch signals or analog signals to control the AC asynchronous motor to perform switch or adjustment actions. Output one analog valve position feedback signal and four relay signals to indicate fully closed, fully open, remote, and comprehensive faults. DC brushed motors can also be controlled by DC 24V power supply.