The DKJ type angular travel electric actuator is the executing unit in the DDZ type electric unit combination instrument. It receives signals from the regulating unit (or computer) and automatically operates the actuator to complete regulation tasks. It is widely used in power plants, chemical industry, petroleum, metallurgy, building materials, light industry, and water treatment industries. It can output torque and 90-degree rotation.The DKJ type electric actuator, when equipped with various electric operators, can achieve disturbance-free switching between "manual ←→ automatic" in the regulating system, and allow timely remote manual operation of the controlled object.