... , automatic temperature compensation, data storage, function set-up, self-diagnose information, automatic power-off and low voltage display.Double- ... , equipped with three-in-one combination pH electrode and ORP electrode, automatic identification of electrode by meter ... : (360×270×76)mm/1.6KgQuality and safety certificationISO9001:2000, CE and CMCWorking ConditionEnvironment temperature5 ~ 35 °C(0 ...