The LC411-USBH series high-speed USB load cells from Omega connect directly to your computer and offer up to 1000 readings per second. Free PC software makes data logging and charting of readings simple. Also included are .NET APIs and a command set for command line access. No additional power supply is needed. The all-stainless-steel load cells are powered directly from a computer’s USB port. Five-Point NIST-traceable calibration is provided. Figures for linearity are 0.13% full scale for 3000 lb (1360 kg) and less and 0.10% for greater than 3000 lb. For linearity, the figures are 0.12% for 3000 lb or less and 0.10% for greater than 3000 lb. Repeatability is 0.05%. Operating temperature: -40 to +80°C (-40 to +176°F).