Hidden modes

This unit works as advertised, although the user manual does not include some modes. It comes with batteries (2x AAA) and 2 clear weighing trays that act as a protector (one is the size of the weighing part another is the size of the unit).
In the first test, with Hestya Calibration Weights. Weights at 1g/2g/5g/10g were accurate. At 50g weight, it showed 50.03g and at 100g weight, it showed 100.07g.
1) Cal mode - Hold M while it is turned on to access the calibration. 100.00g will be blinking in the LCD, so place a 100g weight to calibrate. After calibration, weighing the calibration weights gave accurate results for multiple uses.
2) Idle shutoff timer - While off, hold the M button and press the power button 4 times. Use the M button to select between 0/60/120/180s idle shutoff timing and press the power button to select.