Features: Experience Precisions with our 4 in 1 Water Test Meter, designs to accurately measure salinity, level, conductivity, and temperature, ensuring best water quality for your Marine environment . Crafted from ABS material, this digital water quality testing features a high Precisions Sensors and easy to read LCD backlight display for quick and accurate readings. Ideal for home users, Aquariums enthusiasts, farmers, laboratory researcher , and environmental Professional search reliable water quality monitoring tool . Perfect for use in aquariums, swimming pools, agricultural irrigation systems, laboratory water analysis, and even household drinking water testing. Maintain a healthy Marine environment effortlessly with this Easy Carry and user friendly water test pen, making it essential tool for any water quality assessment needs. Specifications: Material: ABS Length: about 183.5mm/7.22inch Package Includes: 4 in 1 Salinity Meter note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.