Description: C-600 is the latest multi-functional water quality tester developed in 2020, with 7 functions and one product for multiple uses. It can measure PH / TDS / EC / ORP / seawater specific gravity / temperature. The measurement range is large and wide and can measure freshwater salinity and sea salt. It is suitable for home, swimming pool, drinking water, and amazing digital water quality monitor for aquarium. IP67% waterproof rating, dust penetration protection, short time immersion protection. The probe is detachable design to prevent accidental damage to the probe and increase the replacement cost, easy to replace the probe by yourself. The display supports backlight, which can be easily read in a dark environment. Button battery, long service life; lightweight and easy to carry. Specifications: Color: Sky-blue Material: ABS Size: 183 * 37 * 37mm（7.2 * 1.5 * 1.5in） Display size: 33 * 24mm Power supply: 3x1.5LR44 (not included) Temperature range: 0.1-60.0°C 32.0-140°F Temperature accuracy: ±0.5°C Temperature resolution: 0.1°C /°F TDS coefficient: 0.4 to 1.0 Operating environment: 0 to 60.0°C (32.0-140°F); Relative humidity 100% SG: Measuring range: 1.000? 1.222 ORP measurement range: 0±999mV Automatic shutdown: 5 minutes Power consumption: 2.9 mA Waterproof rating: IP67 PH measurement range: 0.01-14.00pH Resolution: 0.01pH Accuracy: ±0.05pH Salinity measurement range: 0.00 to 25.00% Resolution: 0.01% Accuracy: 0.01-5.00% (±0.1%) 5.10-25.00% (±1%) TDS measurement range: 0 to 1000ppm, 1000ppm to 10000ppm, 10.1 to 200.0ppt Resolution: 1ppm; 0.1 point Accuracy: ±2% of reading EC measurement range: 0 to 10000uS/cm 10.01-19.99ms 20.1-400mS/CM Resolution: 1 uS/cm; 0.1 ms/cm; Accuracy: ±2% of reading Note: - The accuracy within 150ppt is relatively accurate, and the deviation above 160ppt is large - There may be slight size deviations due to manual measurement, different measuring methods and tools. - The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.