Description Specifications Density range: D = 0 to 4, 0 to 4.5, 0 to 5 Repeatability: ±0.02 Measuring error: 0 to 2, 2 to 4.5, 4.5 to 5 Power: 50 to 60 Hz, 100 to 120 volts or 200 to 240 volts Power dissipation: 25 watts Aperture size: diameter 2 mm Display: three digital displays Sampling time: 0.8 seconds Communication port: RS232 port, optional USB connection Working environment: 0 to 40 °C Dimensions: 260 mm high x 265 mm wide x 110 mm long Weight: 2.1 kg