Certified (NTEP Class III) Legal for Trade. All-purpose precalibrated scale?no installation required. Heavy-duty deck with 150% overload protection. Keyboard: units (lb./kg), zero, net gross, tare and print. Powder-coat, tread-plate steel for superior durability. Top access leveling feet and junction box for easy setup. RS232 serial output (cable not included). Indicator features 15 ft. cable and 3/5" LED display.