Key operate description: 1. "0-9" numeric keys 2. < < numeric backspace key, delete one digit. 3. "zero", counter reset. 4. "peeling", the present weight charge zero. 5. "manual", fill the filling liquid weight once. 6. "automatic", filling the filling liquid continuously, filling the container and filling it into the empty container, filling it back automatically. Rated current: 5A, rated voltage: 12-24V (AC and DC general) Product warranty: lifetime maintenance, three package period 18 months (with manufacturing date). Shape size: 100*162*49mm Installation size: 92*155mm Type number of weighing sensors: 1Kg-40Kg (products without sensors and platforms). Filling ambiance range: 1g-30Kg Minimum resolution: 0, 1g, 10g Repeat error: zero is dependent upon the sensor&;s vary and filling speed. The demonstrate decision will routinely switch in step with precise weight and sensor type.