Hi
Which is the highest accuracy between SW-520D, SW-18010P, KY-031 sensor modules?

 

Look at the specifications on the datasheets and compare them.

Les.

 

Hi
Which is the highest accuracy between SW-520D, SW-18010P, KY-031 sensor modules?

You have three devices which serve three different purposes. The first is an on/off tilt switch sensor, the second is a vibration sensor and the third is a knock sensor. There is no "highest accuracy". What exactly in detail are you trying to do? Read the linked data and determine which part fits your specific needs.

Ron