** Introduction:- When weighing, put the weight scale on the hard and smooth ground, do not put them on carpet or soft or foam ground, to avoid not accurate measurement. Do not place the scale in high or low temperature places, do not pound, hit or fall the product. While not in use, do not stow anything on the scale for long time to avoid damaging the sensor. LO is displaying for insufficient power, Er is displaying for overweight. Weighting of small items method: start the machine by manual pressure after displaying 0.0 put the small in 6 seconds. Self weight error may appear after the first use or moving position. Key Specifications Capacity: Up to 180 kg / 200 kg Display: Digital LCD with black/clear backlight (approx. 70 x 28 mm)Platform Material: 6mm toughened/tempered glass Power Source: AAA batteries (Battery operated)Operation Features: Auto-on, auto-off, low battery indicator ('LO'), and overload error indicator ('Er'