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 temperature Small size for easy storage and hand carry Large 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 etc Specification: Brand:SMART SENSOR Model: PH818 Type: portable PH meter Display mode: LCD Measurement range: 0.00-14.00ph Accuracy:±0.05 PH Temperature compensation scope: 0℃to 70℃(℃) Power supply voltage: 2* AAA batteries (not included) Working temperature: 0 to 50 (℃) Working humidity:≤80%RH Weight: Approx.156g/5.5oz Package list: 1*PH meter( battery not included) 1*User's guide Note: 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. .