No, an actuator is not the same as a sensor.
An actuator is a component that receives an input signal and converts it into physical motion or energy to perform a specific action. For example, a motor that controls the movement of a robot arm is considered an actuator.
On the other hand, a sensor is a component that detects changes in its environment and produces an output signal that can be measured or monitored. For example, a temperature sensor that measures the temperature of the air is considered a sensor.
While both actuators and sensors can be used in various applications and often work together in control systems, they perform different functions and have different mechanisms.