1Using 4LED digital display, it is convenient to read the measurement data clearly and accurately. 2Equipped with BNC composite electrode, convenient to replace the electrode and improve the performance. 3The test range is PH: 014PH, ORP: 19991999mv, high accuracy, stable performance, and small error. 4With data lock function, it is convenient to record and save measurement data. 5Portable PH/ORP monitor, easy to use, durable and long-lasting, with strong practicability.Condition: 100% Brand New Item Type: PH ORP Monitor Material: ABS Test Range PH: 0-14PH, ORP: -1999-1999mv Resolution: PH: 0.01PH, ORP: 1mV Accuracy: PH: 0.1% +0.02, PH ORP: 5mV Display: 4LED Display Ambient Temperature: 0-50 Environmental Humidity: 1 x PH ORP Monitor1 x PH Probe1 x ORP Probe2 x Sucker1 x Bracket1 x Plastic Bracket1 x Manaul1.Please allow 0& 8209;1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.