Lutron Dissolved Gas Tester, 0 ... 20 mg/L

Extra large dual LCD: 52 x 38 mm. Display comes with switchable green backlight. Measurement of DO, O₂ and temperature. Built-in salt compensation. Built-in altitude compensation. RS-232/ USB interface. MAX/MIN, data hold and Data logger. Suitable for SD card capacity of 1 up to 16 GB.