My weigh hd300 heavy duty shipping scales 14 x 14 cast platform easy to read extra large lcd display ac adapter included ups worldship compatible usps endicia dazzle compatible rs 232 with computer cable included full tare feature extra durable heavy duty design excellent for shipping receiving spot checking refrigerant and more extra long cord on mountable display for perfect quick installation reads in pounds or kilograms 120kg x 005g standard rs 232 interface connection with 9600 bau