FEATURES * The pen type, all in one Salt meter provides fast, accurate readings, with digital readability and easy operation. * Measuring range : 0 to 12 % salt ( % weight ). * Build in temperature sensor, ATC ( auto temperature compensation ). * Carbon rod electrode for long life. * IP67, water proof and protection. * LCD display, read. to read. * Data hold function for freezing the desired value. * Auto power off to save the battery life. * Records max. and min. value with recall. * Microcomputer circuit, intelligent function, high accuracy. * Compact size, light weight. * Built-in Low battery indicator. * Power supply by DC 1.5 V battery ( UM4/AAA ) x 4 PCs. * Application : Water conditioning. aquarium, food processing, photography, school, laboratory, industrial and quality control.