Features  Advanced embedded MCU technology.  SMT and integrative design to enhance the meter's performance and dependability.  The ABS case is stout and firm.  The membrane key has a longer using life.  Display language can be set between Chinese and English.  Composite pH glass electrode to guarantee the accuracy and fast measuring.  Several kinds of calibration, easy for operation.  The screen contrast adjusting is easy and simply.  The intelligent measuring and "automatic judge stability" function to make your work easily. Specifications Display: LCD, dot matrix 192*64, display in Chinese and English language. Measuring range: (0.00~14.00)pH Resolution: 0.01pH Precision: ?.02pH Input impedance: ≥1?012Ω Responding time: reaching 90% of the change in 1 minutes at 25℃ Temperature sensor: Pt1000 Temperature measurement range: (0.0~99.9)℃ Temperature measurement precision: ?.5℃ Temperature measuring resolution: 0.1℃ Temperature compensation: (0.1~60.0)℃(automatic or manual) Sample temperature: (5~60)℃ Ambient temperature: (5~45)℃ Ambient humidity: ≤ 90%RH (no condensation) Storage and transportation temperature: (-25~55)℃(the temperature should be higher than 0℃ for electrode ) Power supply: (220?2)VAC,(50?)Hz Power consumption: ≤3W Overall dimension: 200L?10W?5H(mm) Weight: 2kg Standard components: One meter (03.02.07) One 201-C composite pH electrode (01.05.01.04) An ATC temperature electrode (04.02.40) One electrode bracket. One set of standard buffer solution (pH4.01,pH6.86,pH9.18) Electrode holder (01.05.05.03) Opitional: 2503D-C low resistance composite pH electrode (01.05.01.02)