51) Electrode connector (BNC for HI 9023C and DIN for HI 9023CN)2) Temperature probe socket (HI 9023C only)3) Liquid Crystal Display4) CAL key to enter or exit calibration mode5) CFM key to confirm calibration6) Ï°C and Ð CCCCC keys for manual temperature setting (HI9023C only)7) ON/OFF key to turn the instrument on or off8) RANGE key to select pH, C or mV9) Low battery indicator (additional decimal point)10) Mode indicatorFUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTIONHI 9023C & HI 9023CNHI 9023C & HI 9023CNHI 9023C & HI 9023CNHI 9023C & HI 9023CNHI 9023C & HI 9023CN6SPECIFICATIONS HI 9023CSPECIFICATIONS HI 9023CSPECIFICATIONS HI 9023CSPECIFICATIONS HI 9023CSPECIFICATIONS HI 9023C& HI 9023CN& HI 9023CN& HI 9023CN& HI 9023CN& HI 9023CNHI 9023C HI 9023CNRange 0.00 to 14.00 pH±399.9 mV (ISE); ±1999 mV (ORP)0.0 to 100.0 C 0.0 to 70.0 CResolution 0.01 pH0.1 mV (ISE); 1 mV (ORP)0.1 CAccuracy ±0.01 pH(@20°C/68°F) ±0.2 mV (ISE); ±1 mV (ORP)±0.4 C ±0.5 CTypical EMC ±0.02 pHDeviation ±0.2 mV; ±1 mV±0.2 C ±0.5 CCalibration Automatic with 3 memorized standardbuffers (4.01, 7.01, 10.01)Temperature Automatic or manual AutomaticCompensation 0 to 100 C (32-212 F) 0 to 70 C (32-158 F)Electrode HI1230B plastic body, HI1217D plastic body,combination pH, BNC 4-in-1 gel pH/ C, DIN1 m cable (included) 1 m cable (included)Temperature Probe HI 7669/2W (incl.) not necessaryInput Impedance 1012 OhmBattery Type & Life 4x1.5V, AA size (alkaline batteries)approx. 400 hours of continuous useauto-shut off after 10 minutes of non-useEnvironment 0 to 50 C (32 to 122 F); 100% RHDimensions 196x80x60 mm (7.7x3.1x2.4") (meter)340x230x80 mm (13.8x9x3.1") (kit)Weight 425 g (15 oz.) (meter)1.3 Kg (3.0 lb.) (kit)