Proximity Sensor Light Always On

When using the proximity sensor I followed the steps in module 2 but when the sensor pins are put in the respective slots in the Bolt, (GND,VCC,4) the red light of the sensor is always on and digitalRead gives value = 0. The red led switches on as soon as the sensor is attached to Bolt.

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Hi, there is a small screw on the potentiometer, please turn the screw till the red led goes off, make sure your hand does not obstruct the sensor during this process.

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Yup, it’s working properly now.
Thank you.