PH-86L Waterproof Pen-type PH, EC & Temperature 3-in-1 Tester Smart pen-type 3-in-1 tester capable of measuring water and wettable solids such as soil, dough, milk, fruits, meat, etc. Powered by two large-capacity AAA batteries, eliminating frequent calibration needs. Two-point button calibration with automatic recognition of pH standard buffer solutions. Automatic temperature compensation ensures accurate measurements across the full range. Auto power-off function effectively conserves battery energy. Replaceable electrode reduces maintenance and usage costs. Fully waterproof design provides complete protection for the device in harsh environments. Technical Specifications: Model PH-86L Measuring Range PH 0.00–14.0 PH EC 0.00–19.9 mS/cm Temp 0–50℃ Resolution PH 0.1 PH EC 0.1 mS/cm Temp 0.1℃ Accuracy PH ±0.1 PH EC ±2% FS Temp ±1℃ Automatic Temperature Compensation 0℃–50℃ Battery 2×1.5V (AAA Batteries) Operating Temperature 0℃–50℃ Calibration Method Automatic 2-point calibration Dimensions 210 × 40 × 25 mm Weight 100g