Easy to change the electrode. Pen type ORP meter, all in one, ORP electrode is included, easy for general purpose application. Water proof and protection. Build in temperature sensor, ATC (auto temperature compensation). Auto calibration for 0 mV, 500mV Temperature measurement Available for wide applications, such as aquarium, beverage, fish hatcheries, food processing, photography, laboratory, quality control, school & colleges, swimming pools, water conditions. LCD with two displays and low battery indicator. Data hold function for freezing the desired value. Auto power off without any operations after 20 mins. Microcomputer circuit, intelligent function, high accuracy. Compact size, light weight. Power supply by DC 1.5 V battery (LR44, BAT ) x 4 PCs

Easy to change the electrode. Pen type ORP meter, all in one, ORP electrode is included, easy for general purpose application. Water proof and protection. Build in temperature sensor, ATC (auto temperature compensation). Auto calibration for 0 mV, 500mV Temperature measurement Available for wide applications, such as aquarium, beverage, fish hatcheries, food processing, photography, laboratory, quality control, school & colleges, swimming pools, water conditions. LCD with two displays and low battery indicator. Data hold function for freezing the desired value. Auto power off without any operations after 20 mins. Microcomputer circuit, intelligent function, high accuracy. Compact size, light weight. Power supply by DC 1.5 V battery (LR44, BAT ) x 4 PCs