【High Precision Water Quality Testing】The A13 Water Quality Tester offers accurate measurements of EC, TDS, and temperature, ensuring comprehensive analysis of your drinking water. 【User-Friendly Interface】Features an intuitive emoji display, showing a smiling face for TDS levels below 40ppm and a frowning face for levels above, making water quality assessment quick and easy. 【Advanced Titanium Alloy Electrode】Equipped with a metal-sensitive titanium alloy electrode for faster and more precise measurements, enhancing overall testing efficiency. 【Portable Design】Compact and lightweight, this tester is perfect for on-the-go use, whether at home or while traveling, ensuring you can check water quality anywhere, anytime. 【Environmentally Friendly】Constructed with eco-friendly materials, this product aligns with environmental consciousness while maintaining high performance standards. 【Waterproof Reference Chart】Includes a waterproof water quality reference chart on the back for added convenience. Specifications: Model: A13 TDS Range: 0-9999ppm EC Range: 0-9999μs/cm Temperature Range: 0-60℃/32-140℉ Resolution: 1ppm/1μs/cm/0.1℃/1℉ Accuracy: ±7% F.S Power: 2 x AAA batteries (not included) Backlight: Supported Dimensions: 16.5 x 29.5 x 150mm Material: ABS