Six functional parameters, online continuous monitoring device. Necessary tool for testing PH / Temperature / EC / CF / ORP / TDS of your solution level. Equipped with rechargeable batteries, BNC electrode and AC/DC adaptor for all continuous monitoring applications. Suitable for aquarium, pool, laboratory, spa, and environment water. Features: Imported IC and has a high price-performance ratio Selectable °C/°F Easy calibration Longtime on-line monitoring FCC certificated Clear LCD with backlight Best in aquarium, hydroponics, laboratory, spas, swimming pools, and other water systems With Automatic temperature compensation Specifications: 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) ORP: -1999~1999mV Resolution pH: 0.01pH Temperature: 0.1°C(0.2°F) EC: 0.01mS/cm CF: 0.1CF TDS: 10ppm(mg/L) ORP: 1mV Accuracy pH: ±0.1pH Temperature: ±1.0°C EC/CF/TDS: ±2%F.S. ORP: ±0.1%F.S.±1digit 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 Weight: 230g Set Includes: 1 x 6 in 1 Water Quality Monitor 1 x pH Electrode with BNC connector 1 x ORP Electrode with BNC connector 1 x Temperature Electrode 1 x 4.01ph, 6.86ph & 9.18ph calibration solution powder 2 x EC1413 & EC12.88 Conductivity Calibration solution 3 x Suction Cups 1 x Metal Hanging Bracket 2 x Mounting Plastic Brackets 1 x Mini Screwdriver 1 x AC/DC Adapter English User Manual