whats this block in matlab simulink

Hi everyone I want to know whats this block is (the one i show with green arrow)

[Ayush Singh]

Hi Hanife,

Where did you extracted the model from?

Answer 1

[Abhinaya Kennedy]

The block pointed to by the green arrow in the image appears to be a voltage regulator. Voltage regulators are used in a variety of applications to maintain a constant voltage level even if the input voltage fluctuates or the load current changes.