1: Install the “Structure Sensor Calibrator” app on your iPad.

2: Attach the structure sensor to your iPad.

3: Launch the app and fill up your solar meter, either outdoors or indoors.

4: When the sunlight is full, colour and infrared split-screen will be displayed. To calibrate well, target complex objects and scenes with high contrast.

5: Once you have determined the object to be measured by the sensor, you can specify it to fall within the square and manually fine-tune the calibration.