Features 1、PH TDS Temp Test: 3 in 1 water quality analyzer, supporting the measurement of pH, TDS, and temperature values, with high accuracy and resolution. 2、HD Large Screen: The water quality analyzer adopts high definition large screen, which is clear and intuitive, ensuring convenient and accurate readings. 3、Waterproof Probe: The analyzer adopts high sensitivity waterproof probe, which is sensitive in response, and accurately record the measurement position. 4、Battery Powered: The water quality testing pen is powered by 3pcs button batteries (not included), making it easy to use anytime and anywhere. 5、Applicable Scene: Widely used for water quality detection, such as drinking water, swimming pools, laboratories, aquaculture, sewage treatment, etc. Specification Item Type: Water Quality Test Pen Model: TEM-986 Material: ABS Range: PH: 0.00-14.00pH EC: 0-9990us/cm TDS: 0-19990ppm Temperature: -50℃-70℃ (58℉-158℉) Resolution: PH: 0.01pH EC: 10us/cm TDS: 10ppn Accuracy: PH: 0.1pH EC TDS: ±2%F.S TEMP: ±1℃ (±2℉) Battery: 3 x 1.5V LR44 Button Battery (battery not included) Temperature Compensation: 0℃-50℃ Working Temperature: 0℃-50℃ Package List 1 x Water Quality Test Pen 3 x Accessories