Please find the Calibration steps below along with a Tutorial Video.

STEP 1:  Switch the scale ON and immediately press the UNIT button 4 times.

STEP 2: When the scale displays 5000 press the TARE button, it will show CAL0 and 5000.

STEP 3: Keep a 5kg weight (single stone/single pack) on the scale until the display calculates weight and 'PR55'/'PASS' appears on the screen. This means the scale is calibrated and passed.

STEP 4: Remove the 5kg weight from the scale and switch OFF.