The SC-230 portable meter features graphic menu design with IP65 waterproof protection. The meter is compatible with 4-electrode cell which allows a wide range of application from medium to high conductivity solutions and also for salinity & TDS. When combineswith resistivity cell, it measures very low to medium conductivity water such as pure water with high accuracy. The advanced data logger function allows the meter automatically measure and save with time interval up to 50,000 sets, and it can direct transmit the data through Micro USB interface to a computer . Hence, it not only can be as field measuring but also as field recording without hand writing or manually pressing the save button. Features:A novel streamlined shape, suitable for both texture and weight, coupled with the beautiful and simple keypad design, it is easy to hold and control with one hand, and has the ability to cope with various professional measurement applications.Rich functions under the simple and easy-to-understand graphical menu. You can enter the setting without using the double key operation, providing intuitive operation.Backlight display allows users to read it in dim environment. The screen has sufficient contrast, even in sunlight or when the backlight is off, you can read clearly. With IP65 splashing water protection, it can be used safely in wet weather.Easy to replace the batteries by removing 2 screws & a sealed cover only.Using a single key to start, restart and suspend the advanced AutoRead function to achieve satisfied operating experience. The stability standard can be set according to the measured value resolution status or as required, so that the function can be flexible to meet various usage requirements.Exclusive for SC-230: Up to 50,000 sets of measured values memory, which can record measured values, temperature, time/date, user group ID, sample number, and the records comply with GLP standards, just like a mobile recorder.Providing convenient data transmission, and it can even be connected to a computer to directly retrieve .txt files as a USB flash driver.No need to worry the battery running out, you can use the Micro-USB port to connect to a mobile power supply (without battery charging function).With dual-layer password protection function, password protection according to calibration and setting functions, to prevent improper operation of setting and calibration, and to protect stored data from being deleted.