It can complete the manual automatic working state switching of the electric actuator, remote operation and automatic tracking without disturbance switching. On the panel of the electric operator there is a working status indicator and a two-pin ammeter showing the regulator output current and the actuator feedback current. The DFD-07 electric operator can also output the limit relay signal in the automatic working state, and cooperate with the electric servo amplifier to realize the electrical limit of the electric actuator.