Instructions for use: Turn power switch "OFF" position push the "ON" position pull out the display. Chengti arranged in horizontal on a solid flat surface. Chengti placed no level can lead to weigh no. People stop chengti, displays human weight, weight automatically locks the screen after flashing 2 times, shut down automatically after about 10 seconds. After the shock boot again the display shows 0.0KG Unit: unit set up before weighing, weighing cannot be converted. Unit conversion: press the "UNIT" key for unit conversions, units followed by KG-LB-ST error:low voltage display symbol: when the battery is low, the display shows "LO" symbol 2S after automatic shutdown. Appears "LO" symbols to replace the battery. Overload display: when the weight value exceeds the overload value, the display will show "Err" Note : this product is affected by static pressure on a normal weighing. When the improper use and impact, combat, shock or falling, very easy to damage and danger. Weighing to maintain the body smooth, do not shake the body. Do not use chemical solvents to clean chengti, wet wet bucab said, if necessary, but should avoid water entering inside. Do not exceed the maximum capacity value when weighing, when the weight of the object exceeds the maximum capacity value many times can damage the sensor.