3-in-1 Digital LCD TDS EC Meter Pen Water Quality Detector Temperature Tester - Blue Quick, Reliable, and Easy to Use: Simply immerse the TDS meter in water, stir, and obtain results within seconds. There's no need for calibration or setup; it's ready to use straight out of the box Durable Upgraded Accuracy: Equipped with a titanium alloy probe and the latest sensors, you can expect nearly accurate readings every time. Additionally, the digital TDS water quality tester can be easily recalibrated when necessary to enhance accuracy Digital Water Quality Tester: The clear display allows you to check TDS levels anywhere, whether you're traveling, shopping, or enjoying leisure time. The device features / unit switching for temperature, making it convenient for various users Sensitive Probe for Instant Purity Readings: Press the power button and place the probe in the water. A lower TDS value indicates fewer dissolved solids, meaning purer water LCD Screen with Dual Display: The large LCD screen simultaneously shows TDS, electrical conductivity (EC), and temperature readings. It also includes a data hold feature, making it easy to manage in various environments Versatile Testing Capabilities: Ideal for measuring TDS or EC in aquariums, swimming pools, or any water source. You can assess the effectiveness of RO, DI, or distillation systems and check nutrient levels in hydroponic setups Specifications: Material: ABS plastic Measurement Parameters: TDS value, EC conductivity, temperature Measurement Accuracy: 2% Applicable Industries: Household, hospitals, swimming pools, CDC, water treatment laboratories, aquaculture Type: TDS water quality testing pen, multi-parameter water quality analyzer Voltage: 3V Battery: CR3032 Measurement Range: 0-9999 ppm and 0-9999 S/cm TDS Range: 1-9990 ppm EC Range: 1-9990 S/cm Resolution: 1 ppm and 1 S/cm Function: 3-in-1 water test pen, TDS water quality test, EC conductivity test, temperature test; with HD display Package included: 1 x TDS EC Meter Pen 1 x English and Chinese User Manual 1 x Storage Box