Example Evalscript with DN

s2_DN.js

//VERSION=3

function setup() {
  return {
    input: [
      {
        bands: ["B02"],      
        units: "DN",            
      }
    ],
    output: { bands: 1, sampleType: "UINT16" }

  };
}

function evaluatePixel(sample) {
    return [sample.B02];
}