accurate Electronic Price Computing Scale

accurate Electronic Price Computing Scale External Calibration Electronic Price Computing Scale With RS-232C Interface Quick Detail: 1. MOQ:5PCS 2. Payment Terms:15days as we got payment 3. Capacity:15kg/2g 30kg/5g 4. OEM/ODM available. 5. Rated Load: 30kg 6. Accuracy: 2g 7. Power Source: DC: 4A/4V Rechargeable battery AC: 110V/220V±10%, 60Hz/50Hz Q1:What are our scale main function? A :(1). Print: Under regular weighing model, after weighing, press this key to print. (if you