YSI ECOSENSE PH100A pH/ORP/mV/Temperature

YSI ECOSENSE PH100A pH/ORP/mV/Temperature (Accurate, economical, handheld measurements) 1). Temperature Range : -10 to +120°C (14 to 248°F) Resolution : 0.1°C Accuracy : ±0.3°C ±1 digit 2). pH Range : -2 to 16 units Resolution : 0.01 unit Accuracy : ±0.01% of full scale or ± 0.03 pH units System Accuracy (Instrument, sensor, cable): ±0.2 pH units 3). mV Range : -1999 to +1999 mV Resolution : 1 mV Accuracy : ±0.1% ±1 digit Operating range Temperature : 0° to 50° C (32 to 122°F) Relative Humidity : up to 95% Water rating : IP67 waterproof Size : 78 mm wide (widest point) x 184 mm long x 37 mm deep (3.1 in. x 7.25 in. x 1.45 in.) Weight with battery : 272 grams (0.6 lb.) ATC Probe : Thermistor, 10kΩ / 25° C Battery : One 9 volt included with purchase; 1000 hour battery life pH temp compensation : Auto/Manual -10.0° C to 120.0°C (14 to 248°F) pH buffer recognition : US (4.00, 7.00, & 10.00 at 25°C or 4.00, 7.02 & 10.06 at 20°C) or NIST (4.01, 6.86, & 9.18 at 25°C or 4.00, 6.87 & 9.23 at 20°C) pH calibration temp : 0°C to 60°C (32 to 140°F) pH offset recognition : +90 mV at pH 7.00 or 6.86 pH slope recognition : +30% at pH 4.00, 4.01, 9.18, or 10.01 Calibration back-up : Yes Audio feedback : Yes, all keys Autolock feature : Yes Memory : 50 data set reviewable memory Auto shutoff : Automatically powers off after 30 minutes of inactivity