Features:This device is an intellectual precise measurement apparatus.It design and made with precise components ans sensor, it have high sensitive and accuracy,stable to work with different temperatureSmall size for easy storage and hand carryLarge LCD display for clear reading. It can measure the PH value and measure solvent's temperature under test.PH meter widely applied in industrial ,electrical and agriculture,medicine,food industrial etcSpecification:Brand:SMART SENSORModel: PH818Type: portable PH meterDisplay mode: LCDMeasurement range: 0.00-14.00phAccuracy:0.05 PHTemperature compensation scope: 0to 70()Power supply voltage: 2*AAA batteries (not included) Working temperature: 0 to 50 ()Working humidity:80%RHWeight: Approx.156g/5.5ozPackage list:1*PH meter( battery not included)1*User's guideNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..