6 in 1Water Quality tester Professional Aquarium Online PH Meter Monitor Multi-parameter for test PH / Temp/ EC / CF / RH / TDS 40% off     This new water quality monitor is professional and necessary tool for testing PH / Temp / EC / CF / RH / TDS of your solution level. Suitable for aquarium pool, laboratory, and environment water.                    Features:          Widely used to measure the pH / RH / Temperature / Conductivity EC / CF / TDS(PPM) of solution/water.      Imported IC and high cost performance.      Test temperature in Centigrade / Fahrenheit (switchable unit).      Easy calibration of pH and TDS with just a mini-screwdriver.      Can online monitoring for a long time.      Can work continuously more than 10 hours of power outage or outdoor without power after charging the battery for 3 hours.      FCC certificated to offer safer and preciser measurement.      Clear LCD with backlight, 3 results displayed simultaneously.      Automatic temperature compensation.      Easy to use and provides instant display of results.      Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems.                     Specifications:      Range: pH: 0.00 ~ 14.00pH      RH: 10%RH ~ 99%RH      Temp: -50℃ ~ 70℃ (-58 °F  ~ 158 °F  )      EC: 0.00 ~ 19.99EC      CF: 0.0 ~ 199.9CF      TDS: 10 ~ 19990ppm      Resolution: pH: 0.01pH      RH: 1%RH      Temperature:0.1℃ (0.2 °F)      EC: 0.01EC      CF: 0.1CF      TDS: 10ppm      Accuracy: pH: ±0.1pH      RH: 5%RH      Temperature: ±1℃ (±2 °F)      EC,CF,TDS: ±2%F.S      Temperature Compensation: 0℃ ~ 50℃ (32 °F~ 122 °F)      Working temperature: 0 ℃~ 50 ℃ (32 °F~ 122 °F)      Power supply:  DC  6V (Power Adapter Usable)      Battery: 2 * NI-MH  4.8V Battery (Included)      Color: Black      Material: ABS      Plug Type: EU / US (Optional)      Input Voltage: 100~240V      Item Size: 152 * 80 * 26mm / 6.0 * 3.1 * 1.0in (Excluding Conductivity Probe)      Item Weight: 229g / 8.1oz (6 in 1 Meter Body)      Package Size: 23.5 * 16 * 6cm / 9.3 * 6.3 * 2.4in      Package Weight: 624.3g / 22.