This new 3-in-1 water quality monitor is professional and necessary tool for testing pH / Temperature / ORP of the solution level. Suitable for aquarium pool, soil-free growing, laboratory, and environment water.  Features: Widely used to measure the pH / Temperature / ORP (Oxidation Reduction Potential) 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 ORP with just a mini-screwdriver and automatic temperature compensation.  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/ORP-2989;  Plug Type: EU / US (Optional);  Input Voltage: 230～240V (EU) / 110～120V (US);  Range: pH: 0.00 ～ 14.00pH;  Temperature: 0℃ ～ 50℃ (32℉ ～ 122℉);  ORP: 0 ～ ±1999mV;  Resolution: pH: 0.01pH;  Temperature:0.1℃(0.2℉);  ORP: 1mV;  Accuracy: pH: ±0.1pH;  Temperature: ±1℃(±2℉);  ORP: ±5mV;  Temperature Compensation: 0℃ ～ 50℃ (32℉ ～ 122℉);  Working Temperature: 0℃ ～ 50℃ (32℉ ～ 122℉);  Power Supply: DC 6V;  Item Size: Approx. 130 * 76 * 26mm / 5.1 * 3.0 * 1.0in (Excluding Electrode Connector);  Item Weight: Approx. 106g / 3.8oz (3 in 1 Meter Body);  Package Size: Approx. 25 * 18 * 7cm / 9.8 * 7.1 * 2.8in;  Package Weight: Approx. 485g / 17.1oz;   Package List: 1 * 3 in 1 Water Quality Monitor;  1 * User Manual;  1 * pH Electrode;  1 * ORP Electrode;  1 * Temperature Electrode;  1 * AC-DC Adapter;  2 * Suction Cups;  1 * Bracket;  1 * Mini Screwdriver