Experience precise and reliable water quality testing with this advanced TDS/EC Meter, featuring a high-purity platinum sensor for accurate and stable measurements across a wide range. Designed with portability and ease of use in mind, this compact and lightweight device is perfect for on-the-go testing in various environments. Key Features: · High-Purity Platinum Sensor: Ensures accurate and stable measurement values throughout the entire detection range, delivering trustworthy results every time. · Automatic Calibration Function: Simplifies calibration by allowing users to input a known conductivity value, then automatically calibrates when the sensor is immersed in the calibration solution and the ENTER key is pressed. · Measurement Value Lock: Includes a convenient HOLD function that locks the current measurement on the display, enabling easy reading and recording without fluctuations. Press again to resume normal measurement mode. · Energy-Saving Auto Shutdown: Equipped with an automatic power-off feature that activates after prolonged inactivity, helping to conserve battery life and extend device usage. · Waterproof Design: Each structural connection is sealed for excellent waterproof performance, allowing the meter to function reliably even when immersed in water. The device is buoyant, floating naturally when placed in liquid for added convenience. · Backlit Display: Features a color-coded backlight that indicates water quality—green light for TDS levels below 40ppm and red light for TDS levels at or above 40ppm—providing quick visual feedback. Specifications: · Item Type: TDS/EC Meter · Material: Durable ABS · Weight: Approx. 70g (2.5oz) · Battery: CR2032 button cell 230mAh (included) · TDS Detection Range: 0-4999 ppm with ±2% accuracy · EC Detection Range: 0-9999 μS · Temperature Detection Range: 0-99℃ (32-212℉) with ±2℃ accuracy · Color: As shown in the picture How to Use: 1. Remove the pen cover and switch on the device. 2. Immerse the pen tip into the solution to be tested, ensuring the liquid level does not exceed 4cm from the end of the pen. 3. Stir gently a few times and wait for the reading to stabilize. 4. After testing, wipe the pen tip dry with a cloth and replace the pen cover for storage. This TDS/EC Meter is an essential tool for water quality monitoring, combining accuracy, ease of use, and durable waterproof construction in a portable design. Ideal for testing drinking water, aquariums, pools, and other water sources with confidence and convenience.