The Environmental Express Oakton 100 Series Portable Handheld Meter Kits are a combination of advanced electronics technology, sensor technology and software design. With a compact design and carrying case, they are ideal for use out in the field and in the laboratory. Five different kits are available; each kit is designed for specific testing and includes one meter and compatible components. All meters are designed with a built-in microprocessor chip that enables auto calibration, auto temperature compensation, parameter setting, self-diagnosis, auto power-off and low-battery reminders. The meter adopts advanced digital processing technology, intelligently improving the response time and accuracy of measurements. A large LCD with a white background shows the measured parameter and temperature at the same time. All meters are IP57 waterproof and dustproof rated.