This new 3-in-1 water quality monitor is a professional and necessary tool for testing pH / Temperature / EC of the solution level. Suitable for aquarium pool, soilless culture, laboratory, and environmental water. Features: Widely used to measure pH / temperature / EC (electrical conductivity) of solution and water. Imported IC and high cost performance, the electrode probe can be replaced. Test temperature in ℃ / ℉ (unit switchable) and can monitor online for a long time. Easy EC calibration with just a mini screwdriver and automatic temperature compensation. Test EC with a wide range (ms / cm) and a narrow range (us / cm) at will. The pH chip can automatically identify the calibration fluid for the automatic calibration function of the pH. Clear LCD with backlight, 3 results displayed simultaneously. Easy to use and provide instant results display. Apply in water sources, soilless culture, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. CE, FCC and RoHS certified to provide safer, more environmentally friendly and more accurate measurement. Specifications: Color: Blue Material: ABS Type: pH / EC-2981 Plug Type: EU / US (Optional) EC Unit: ms/cm, us/cm (Switchable) Input Voltage: 230 ~ 240V (EU) / 110 ~ 120V (US) Range: pH: 0.00 ~ 14.00pH Temperature: 0℃~50℃ (32℉~122℉) EC: 0.00~19.99ms/cm (0~2000us/cm) Resolution: pH: 0.01pH Temperature: 0.1℃ (0.2℉) EC: 0.01ms/cm (1us/cm) Accuracy: pH: ±0.1pH Temperature: ±1℃ (±2℉) EC: ±2%FS Temperature Compensation: 0℃~50℃ (32℉~122℉) Operating Temperature: 0℃~50℃(32℉~122℉) Power Supply: DC 6V Item Size: Approx. 130 * 76 * 26mm / 5.1 * 3.0 * 1.0in (excluding EC probe) Item Weight: Approx. 138g / 4.9oz (3 in 1 meter body)! Package Size: Approx. 25 * 18 * 7cm / 9.8 * 7.1 * 2.8in Package Weight: Approx. 487g / 17.2oz! Package List: 1 * 3 in 1 Water Quality Monitor with EC Electrode 1 * User Manual 1 * pH Electrode 1 * Temperature Electrode 1 * AC-DC Adapter 2 * Suction Cups 1 * Bracket 1 * Mini Screwdriver 1 * Bracket 1 * Mini Screwdriver