JSN-SR04T ultrasonic sensor

For those who have JSN-SR04T ultrasonic sensors, can somebody explain what is that screw on the side of the board for?

Thanks

I think it's a tuneable inductor. I don't think the user is supposed to adjust it..

I too would like to know what this is.

Yes, inductor, tuned to the frequency of the sensor (40kHz).

Don't try to adjust. You will likely break it, as it's very brittle. Plastic screwdriver is most likely used in the factory, because a metal one influences the inductor. Leo..