For years, these compact, low-profile EK models have been a popular choice for a variety of food lab applications. New electronics, a wider selection of capacities & resolutions, andremote-zeroing have been incorporated into a rugged housing. All feature RS-232C. Models EK-600i, EK-1200i, EK-6000i, EK-12Ki are NTEP approved. Optional rechargeable battery is available for complete portability. 5-year warranty.