1IP65 waterproof, protect the instrument in all directions, no need to worry about water ingress into components. 2It is easy to use, with a large highdefinition LCD backlight screen, which can be measured at night. 3According to the ergonomic design, the product is more convenient to use, and it is convenient for people to hold and measure. 4Sturdy and durable, made of highquality ABS material, long service life, not easy to damage. 5Fiveinone multifunctional water quality detector, which can detect PH, TDS, EC, SALT, TEMP. Item Type: Water Quality Detector Material: ABS Product Function: PH, EC, TDS, SALT, TEMP TDS Measurement Range: 0-10000ppm TDS Accuracy: 1ppm EC Measurement Range: 0-10000S/cm EC Accuracy: 1S/cm PH Measurement Range: 0.00-14.00pH PH Accuracy: 0.01pH Sea Water Salinity Measurement Range: 10.1-200.0ppt. Sea Water Salinity Accuracy: 0.01-5.00% (0.1%), 5.1-25.00% (1%) Screen Size: Approx. 33x24mm / 1.3x0.9in Battery: 3x LR44 Button Battery (Battery Not Included) 1 x 5 in 1 Multi-Function Detector Pen(Battery Not Included) 3 x Reagent Powder 1 x Manual 1. Please allow 1& 8209;2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.