Feature: 1. With large data display, the measurement results can be displayed intuitively and clearly, which is very convenient to use. 2. Support continuous monitoring and display, suitable for aquarium, aquaculture, laboratory, chemical reaction, water treatment, etc. 3. Mini online pH and temperature monitor, made of high quality materials, has good durability and stability. 4. The pH measurement range is 0.00-14.00, and the temperature measurement range is 0-55 ℃, which can meet the basic detection needs. 5. It has the advantages of high measurement accuracy, sensitive response, real-time monitoring, and supports both AC and DC power. Specification: Condition: 100% Brand New Item Type: PH Temperature Tester Material: ABS Measuring Range: PH: 0.00-14.00; Temperature: 0 - 55 °C Resolution: PH: 0.01; Temperature: 0.1 °C Accuracy: PH: ±0.1; Temperature: ±1°C Power: 4 x 1.5V LR44 Button Battery (Battery Not Included), With Power Adapter Automatic Temperature Compensation: 0°C -50°C Calibration Method : Manual Single Point Calibration Size: Approx. 65.8x40x22mm / 2.6x1.6x0.9in . Package List: 1 x On-Line PH Temperature Tester (Battery Not Included)1 x PH Probe1 x Adapter1 x Screwdriver1 x Instruction Manual