Professional 3 in 1 Multi Parameter Water Quality Tester Portable Pen Type PH EC TEMP Meter Acidometer Water Quality Analysis Device The water quality meter is professional and useful tool for testing PH/EC/TEMP of solution level. Ideal for wide applications, such as beverage, fish hatcheries, food processing, aquarium, photography, laboratory, quality control, school & colleges, swimming pools, water conditions. Features: Test temperature in ℃ / ℉(switchable unit). Use to measure the pH & EC & TEMP of solution. Electrode probe can be replaced, ATC function. Easy to carry and simple to operate. Easy calibration of pH and EC. Automatic temperature compensation. Large and clear LCD with backlight, easy to read and accurately measuring functions. Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems. Specifications: Range: pH: 0.00 ～ 14.00pH      EC: 0.00 ～ 19990us/cm       Temperature: 0℃ ～ 70℃ (32℉～ 158℉) Resolution: pH: 0.01pH         EC: 10us/cm           Temperature: 0.1℃ (0.2℉) Accuracy: pH: ±0.1pH            EC:±2%F.S        Temperature: ±1℃ (±2℉) Temperature Compensation: 0℃ ～ 50℃ (32℉～ 122℉) Working temperature: 0℃ ～ 50℃ (32℉ ～ 122℉)  Power Supply: DC 4.5V  Battery: 4×1.5V LR44 Button Cell Batteries (NOT Included) Color: Grey Material: ABS Item Size: Approx. 188 * 40 * 40mm / 7.4 * 1.6 * 1.6in Item Weight: Approx. 75.7g / 2.7oz Package Size: Approx. 21 * 6.2 * 4.4cm / 8.3 * 2.44 * 1.73in Package Weight: Approx. 139g / 4.9oz