Easy-read display Alarm toggle Select,mL'hr, standard AA'Xtte™ drops/min or Drop factor selection total volume Specifications Battery Single AA, lasts 290 hours Weight 3.8 oz. Size 127 x 62 x 28mm (5 x 2.4 x 1.1in) Measurement Units Flow rate (mL/h), drops per minute (dp/m) and total volume (mL) Alarm 80 dB at 10cm approx. Sounds at ±13% rate change or when flow stops Minimum Chamber Diameter 13 mm (0.51in) Maximum Chamber Diameter 21.1 mm (0.83in) Compatible Drip Sets 10, 15, 20, 60 gtt/mL Accuracy ± 1% Warranty 1 year limited warranty Standards Compliance Radiated Emissions CISPR 11:2010 Electrostatic Discharge Immunity IEC 61000-4-2:2008 Radiated RF Immunity IEC 61000-4-3:2010 Magnetic Field Immunity IEC 61000-4-8:2009 Corporate Headquarters Mailing Address