The Oakton WD-35441-70 CyberScan DO 600 Meter Kit contains a handheld dissolved oxygen (DO) and temperature meter with automatic or manual temperature compensation and a backlit multiline graphic LCD screen. It takes a galvanic probe, which has built-in temperature compensation and takes measurements immediately, without warm-up time. The meter can store up to 500 data sets and has an Infrared Data Association (IrDA) wireless interface for downloading data to a PC. The meter has password protection for calibration and setup data, and the real-time clock for time-and-date stamping meets Good Laboratory Practice (GLP) standards. An audible alarm warns when readings are outside set points limit. The meter runs on four 1.5V AA batteries (included) or a universal AC adapter (sold separately). It has European Conformity (CE) certification and is dustproof and waterproof, with Ingress Protection 67 (IP67) and includes a dissolved oxygen probe and a hard carrying case. WD3544170 CyberScan DO600 meters are commonly used in water-quality testing applications.