The HI98120 is a waterproof ORP / REDOX and temperature meter. The housing is totally hermetic and does not allow the entry of moisture. Plus, it's designed to float. Temperature values can be displayed in ° C or ° F units. The meter is factory calibrated and measurements are extremely accurate with a unique stability indicator on the display. This meter is also provided with a battery level indication when starting up, and with a low battery symbol that alerts the user when the batteries need to be replaced. In addition, the Battery Error Prevention System (BEPS) prevents erroneous readings caused by low voltage by turning off the meter. The HI73120 ORP electrode, supplied with the meter, is interchangeable and can be easily replaced by the user. Further, The electrode is supplied with a renewable fiber junction, so it is sufficient to remove 2mm of the junction with a tweezer to extend the life of the electrode. The encapsulated stainless steel temperature sensor enables faster and more accurate temperature measurements. The HI98120 meter provides the most advanced solutions in the measurement of REDOX Potential: • Renewable electrode junction • Two-level display that allows the temperature to be displayed at all times • Indication of the battery life level • Measurement stability indicator • Floating waterproof body. The HI98120 ORP / REDOX and temperature meter is supplied with the HI73120 ORP electrode, the HI73128 electrode removal tool, batteries and instructions.