Features: Can be used to test TDS, EC and water temperature accurately. Accuracy: ± 2%. Range:0-9999ppm (TDS), 0-9990µs/cm-(EC), 0.1-80.0°C/ 32.0-176.0°F (Temperature). Easy to read and record-. Press [HOLD] button then remove from test solution. 5-minute auto shut off. Support automatic temperature compensation, and the water quality test can shift- between TDS and Conductivity. Can be used in water purifiers and filters, food (vegetable, fruit) & drink quality monitoring, pools and spas, aquarium, hydroponics. Specifications: Material: plastics Battery: 3V(CR2032-） TDS range: 0~9999PPM Conductivity test range: 0~9990US/CM- Temperature test range: 0.1℃~80 ℃ Measurement accuracy: ± 2% Style: white with leather pouch/blue with leather pouch/white with backlight/blue with backlight(optional) Package Includes: 1x Water Quality Tester note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.