Feature: 1. MAIN FUNCTION: Multifunction water quality detector, mainly used to measure the salinity and temperature of the solution and water, which is easy to operate and use. 2. MEASUREMENT RANGE: The temperature measurement range is 0℃‑100℃, salinity measurement range is 0‑199.9ppt, widely used in aquariums, swimming pools, laboratories, aquaculture, etc. 3. HIGH QUALITY MATERIALS: Made of high quality ABS materials, strong and durable, corrosion resistant, providing fast and accurate measurements. 4. ANTI SLIP AND EASY TO HOLD: Salinity temperature tester with frosted cover and function keys, anti slip and comfortable to hold, accurate and convenient measurement. 5. BACKLIGHT FUNCTION: With a backlit display, easy to read, clear and intuitive display of measurement results, does not affect the use in the dark. Specification: Item Type: Salinity TEMP Meter Material: ABS Weight: Approx. 452g / 15.9oz Range: Temperature: 0℃-100℃, Salinity: 0-199.9ppt Resolution: Temperature: 0.1℃, Salinity: 0.1ppt Accuracy: Temperature: ±0.5℃, Salinity: ±2%F.S Temperature Compensation: 0℃-50℃ Working Temperature: 0℃-50℃ Product Size: Approx. 161x75x40mm / 6.3x3.0x1.6in Battery: 1 x 6F22 9V Battery (Battery Not Included) Application: Aquarium, swimming pool, laboratory, drinking water. Package List: 1 x Meter (Battery Not Included)1 x Probe1 x Test Needle1 x Modulation Tool1 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.