Features Adopt LCD display with switchable backlight for easy use in the dark. Built-in Automatic Temperature Compensation (ATC) for precise results, handheld design and non-slip grip for easy operation. Measuring range: 1.00ppt-9.99ppt, 10.0ppt-100ppt, very easy to test. Temperature units are °C/°F (switchable). Configurable Replaceable Sensor Probes - Electrode probes can be replaced with a plug-in design for quick and easy replacement. It is suitable for water source monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, beverage industry and scientific research units to measure water salinity. Features: -Adopt LCD display with switchable backlight for easy use in the dark. -Built-in Automatic Temperature Compensation (ATC) for precise results, handheld design and non-slip grip for easy operation. -Measuring range: 1.00ppt-9.99ppt, 10.0ppt-100ppt, very easy to test. Temperature units are °C/°F (switchable). -Configurable Replaceable Sensor Probes - Electrode probes can be replaced with a plug-in design for quick and easy replacement. -It is suitable for water source monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, beverage industry and scientific research units to measure water salinity. Specifications: Material: Plastic Salinity measuring range:  Accuracy: +1-3%F.S.+/-1 digit Instrument Repeatability: +/-0.01ppt/0.1ppt Solvent temperature compensation range: 0-60℃ Temperature accuracy:  +/-1℃ Power Supply: 2 * AAA batteries (not included) Display: Large LCD segment type display Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List