The P50 Pro pH Temp meter, designed for various industries, serves as the optimal handheld digital device for assessing the pH and temperature a variety of liquids. The high-quality and user-friendly meter boasts exceptional accuracy and a comfortable grip, thanks to its rubber ergonomic back and a cord to keep the cap secure. Moreover, its 2-point auto calibration feature simplifies the calibration process. Furthermore, the meter is IP67 waterproof and buoyant, alleviating concerns about misplacing it. The P50 Pro is equipped with batteries and features a replaceable electrode, enhancing the longevity of this pen meter. We recommend storing the meter in an upright position with KCI storage solution in the protective cover. Range:pH: 0.0 ~ 14.0 pHTemp.: 0°C ~ 50°C (32°F ~ 122°F) Resolution:pH: ± 0.1 pHTemp.: 0.1 ºC (1.0 ºF) Accuracy:pH: ± 0.1 pHTemp.: ±0.5°C (32°F)Temp. compensation: 0°C – 50°C (32°F – 122°F) Calibration:pH: 2 point auto 4.0 – 7.0 pH Features:Battery indicator & automatic temp. compensation Power supply:3 × 1.5 Volt AG-13 button cell battery (included) Auto. power-off:After 8 minutes Calibration indicator:With correct calibration Waterproof:IP67 Dimensions:220 x 40 x 40 mm Weight:102 grams