This new 3-in-1 water quality monitor is professional and necessary tool for testing pH / Temperature / TDS of the solution level.Suitable for aquarium pool, soil-free growing, laboratory, and environment water. Features: Widely used to measure the pH / Temperature / TDS (Total Dissolved Solids) of solution water. Imported IC and high cost performance, the electrode probe can be replaced. Test temperature in / (switchable unit) and can online monitoring for a long time. Easy calibration of TDS with just a mini-screwdriver and automatic temperature compensation. Test the TDS with both PPT and PPM unit at will. Chip pH can automatically identify calibration fluid for pH automatic calibration function. Clear LCD with backlight, 3 results displayed simultaneously. Easy to use and provide instant display of results. Apply in water sources, soil-free growing, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. CE, FCC RoHS certificated to offer safer, more environmentally friendly and preciser measurement. Specifications: Color: Blue Material: ABS Type: pH/TDS-2983 Plug Type: EU / US (Optional) TDS Unit: PPM, PPT (Switchable) Input Voltage: 230 #xff5e;240V (EU) / 110 #xff5e;120V (US) Range: pH: 0.00 #xff5e; 14.00pH Temperature: 0 #xff5e; 50 (32 #xff5e; 122) TDS: 0 #xff5e; 2000PPM (0 #xff5e; 19.99PPT) Resolution: pH: 0.01pH Temperature:0.1(0.2) TDS: 1PPM (0.01PPT) Accuracy: pH: 0.1pH Temperature: 1(2) TDS: 2%F.S Temperature Compensation: 0 #xff5e; 50 (32 #xff5e; 122) Working Temperature: 0 #xff5e; 50 (32 #xff5e; 122) Power Supply: DC 6V Item Size: Approx. 130 * 76 * 26mm / 5.1 * 3.0 * 1.0in (Excluding TDS Probe) Item Weight: Approx. 137g / 4.8oz (3 in 1 Meter Body) Package Size: Approx. 25 * 18 * 7cm / 9.8 * 7.1 * 2.8in Package Weight: Approx. 482g / 17.0oz Package List: 1 * 3 in 1 Water Quality Monitor with TDS Electrode 1 * User Manual 1 * pH Electrode 1 * Temperature Electrode 1 * AC-DC Adapter 2 * Suction Cups 1 * Bracket 1 * Mini Screwdriver