Feature 1MAIN USAGES: The detector is used to measure ORP and temperature, suitable for water purification application, Ionizer, chlorine monitoring and environmental testing, etc. 2AUTO CALIBRATION: With digital calibration button, automatic range calibration with digital trimming ensures high measurement accuracy, which is efficient and reliable. 3GOOD PROTECTION: The digital ORP detector housing is made of excellent ABS material, with IP67 waterproof rating, which can be used in more testing environments. 4MULTIPLE FUNCTION: With automatic shutdown function, data hold function and low battery indicator, large and clear LCD screen displays both ORP and temperature readings. 5OTHER PARTS: The digital hydrogen meter has a compact size for easy handling, with replaceable glass sensor and reference tube electrodes, convenient and durable.Item Type: ORP TEMP DetectorORP Range: -999 to +1000 mVTemperature Range: 0-55; 32-130Resolution: 1mVTemperature Resolution: 0.1 (0.1)Accuracy: ORP: 2%, Temperature: 2%Calibration: Digital calibration via button.Electrodes: Replaceable glass sensor and reference tube electrodesHousing: IP67 waterproof (submersible; float)Battery: 2 x AAA Battery (not included)Material: ABSWeight: Approx. 150g / 5.3ozUses: Suitable for all ORP tests including antioxidant measurements, water purification applications, ionizers, agriculture, aquarium and aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit and vegetable washing, hydroponics, metal finishing, ozone system monitoring, pharmaceutical and medical applications, swimming pools and spas, pulp bleaching, vineyards and wineries, and water treatment .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Detector (Battery Not Included)2 x User Manual1 x Lanyard2 x SandpapersNoteThe meter does not work with pure or distilled water.