Specifications > 53SPECIFICATIONSSpecifications subject to change without notice.MODEL MODEL NUMBERML3320ECO D22800BML3321ECO D22810BML3390ECO D22820BML3391ECO D22830BITEM SPECIFICATIONPrint Method Impact dot matrixPrintheadML3320ECO/ML3321ECOML3390ECO/ML3391ECO9 pins, 0.34 mm diameter, thermal protection24 pins, 0.20 mm diameter, thermal protectionDimensions (W x D x H)(Without platen knob,acoustic cover and paperseparator)ML3320ECO/ML3390ECOML3321ECO/ML3391ECO398 x 345 x 116 mm552 x 345 x 116 mmWeightML3320ECO/ML3390ECOML3321ECOML3391ECO5.8 kg7.6 kg7.7 kgPower RatingVoltageFrequency220 - 240V ± 10%50/60 Hz ± 2%Power Consumption(Without options attached)ML3320ECO/ML3321ECOOperationPowersave modeML3390ECO/ML3391ECOOperationPowersave modeTyp. 36W (ISO/IEC10561/Letter/Draft/Range 1)Max. 2.0WTyp. 35W (ISO/IEC10561/Letter/Draft/Range 1)Max. 2.0WEnvironmental Requirements Operating Temperature: 5 to 35CStorage Temperature: -10 to +50COperating Humidity: 20 to 80%RH (max. wet bulb temp. 30C)Storage Humidity: 5 to 95%RH (max. wet bulb temp. 40C)Noise Level The acoustic noise of this product is less than 57dB(A) asmeasured in accordance with EN ISO7779