Specification               Name: DOZ30 Dissolved Ozone Test Meter      Measuring range: 0 -10.00 mg/L      Resolution: 0.01 mg/L      Accuracy: ±1% F.S.      Temperature measurement range: 0 - 100.0 °C / 32 - 212 °F      Operating temperature range: 0 - 60.0 °C / 32 - 140 °F      Calibration method: 2 points (0, any point)      Locking function: selectable,manual or automatic      Electrode: CS6930 membraneless three-electrode ozone electrode      Screen: 20 * 30 mm multi-line LCD display      Waterproof grade: IP67      Auto backlight: 1 minute      Auto Power Off: 5 minutes      Manual: English      Power supply: 1x1.5V AAA7 battery (Battery not included)      Size: 185×40×48 mm (H×W×D)                        Package Included:      Dissolved Ozone Meter*1      English Manual*1                                                Features:           & 9679;IP67 waterproof grade      & 9679;4-button easy operation, comfortable to hold      & 9679;Can carry out throwing water quality       measurement (automatic locking function)      & 9679;Using the three-electrode principle to measure       dissolved ozone concentration, which is accurate,       fast and reliable, and can be compared with the DPD method      & 9679;No consumables required; less maintenance; measured       values are not affected by low temperature or turbidity      & 9679;Self-replaceable CS6930 dissolved ozone electrode;       accurate and stable; easy to clean and maintain      & 9679;Easy to maintain, batteries and electrodes can be       easily replaced without any tools      & 9679;Backlit screen, multi-line display, easy to read      & 9679;Self-diagnosis display of electrode efficacy status      & 9679;Automatic shutdown within 5 minutes after no key action                               Instructions for use:      1. During measurement, the sample needs to flow       at a uniform speed and cannot be measured at rest;      2.