Features:  Imported IC and has a high price-performance ratio.  Selectable °C/°F.  Easy calibration.  Long time on-line monitoring.  Just plug in the AC adapter, calibrate and the unit is ready for all continuous monitoring applications.  FCC certificated to offer safer and precise measurement.  Clear LCD with backlight, 3 results displayed simultaneously.  Best in aquarium, hydroponics, laboratory, spas, swimming pools and other water systems.  Automatic temperature compensation.  Easy to use and provides an instant display of results.     Specification:  Range:  PH: 0.00~14.00PH;  Temperature: -50~70°C (-58~158°F);  EC: 0.00~19.99mS/cm;  CF: 0.0~199CF;  TDS: 10~19990ppm(mg/L).  Resolution:  PH: 0.01PH;  Temperature: 0.1°C(0.2°F);  EC: 0.01mS/cm;  CF: 0.1CF;  TDS: 10ppm(mg/L).  Accuracy:  PH: ±0.1PH;  Temperature: ±1.0°C;  EC/CF/TDS: ±2%F.S.  Automatic Temperature Compensation: 0~50°C (32~122°F).  Operating Temperature: 0~50°C (32~122°F).  Power Supply:  DC  6V (included Adaptor).  Color: Black.  Input Voltage: 100~240V.  Size: 152 x 80 x 20mm.     Package included:  1 x 5 in 1 Water Quality Monitor;  1 x PH Electrode with BNC connector;  1 x Temperature Electrode;  3 x Suction Cups;  1 x Hanging Bracket;  2 x Mounting Plastic Brackets;  1 x Mini Screwdriver;  1 x AC/DC Adapter (EU Plug);  1 x English User Manual.