1The waterproof and dustproof grade can reach IP68, ensuring the components to run normally for a long time. 2PH value within 3-9PH can be measured with high accuracy up to 0.3PH. 3High density epoxy resin is used for high temperature vacuum filling between the probe and the body, which can prevent moisture from entering the body interior and has good sealing performance. 4Suitable for agricultural cultivation, industrial production, environmental monitoring, animal husbandry and sewage treatment. 5Easy to operate and portable to carry around. High accuracy and quick response, providing fast, accurate and reliable reading data.Condition: 100% Brand New Item Type: Soil PH Meter Material: ABS DC Power Supply (default): 12-24V DC Power Consumption: 0.15W (@12V DC, 25) Measurement Accuracy: 0.3PH PH Measurement Range: 3-9PH Long-term Stability: 5%/y Output Signal: RS485/0-5V / 0-10V / 4-20mA output Operating Temperature: 0-55 Response Speed: 15S Waterproof Grade: IP68 Size: Approx. 13.5 x 4.5 x 1.4cm / 5.3 x 1.8 x 0.6in Weight: Approx. 184g / 6.5oz Usage: 1. Surface measurement method: select a suitable measurement site, avoid stones, ensure that the steel needle will not touch hard objects, cut the surface layer according to the required measurement depth, maintain the original tightness of the soil below, hold the sensor vertically inserted into the soil, do not move from side to side when inserting, it is recommended to conduct multiple measurements to calculate the average value. 2. Buried measurement method: dig a pit with a diameter of >20cm vertically, insert the steel needle of the sensor into the wall of the pit horizontally at the established depth, fill the pit tightly, and after stabilizing for a period of time, measure and record for several days, months or even longer time. }1 x Soil PH Meter Please allow 1-3cm error due to manual measurement. Thanks for your understanding.