If you place an order today, you will receive 2 three-in-one TDS professional precise digital portable water quality detection pens. They feature high-precision titanium alloy electrodes - capable of accurately measuring the total dissolved solids (TDS) values of drinking water, aquariums, hydroponic systems, and household water. They also have data retention function and automatic shutdown function, making it convenient for reliable water quality analysis.

The upgraded three-in-one water quality testing pen can precisely measure TDS value, conductivity, and real-time water temperature. The titanium alloy electrode is corrosion-resistant and wear-resistant, while the enhanced sensor has a fast response and high data accuracy. It is equipped with a large-screen backlit LCD, allowing for clear reading in dark environments. The IP67 waterproof and dustproof design ensures greater peace of mind when used in wet environments. It supports automatic calibration, data locking, and automatic shutdown after 5 minutes. The operation is simple and easy to master with just one click. It is compatible with various scenarios such as household drinking water, tap water, fish tanks, hydroponic cultivation, and RO filtration systems. It enables quick water quality purity testing anytime and anywhere, providing comprehensive protection for family drinking water safety. It optimizes the ecological environment for breeding and planting, suitable for both household and commercial use, and easily resolves water quality concerns.

【Precise Testing, Reliable Water Source Choice】The upgraded three-in-one water quality testing pen integrates TDS value, conductivity, and real-time water temperature detection. It is equipped with enhanced high-sensitivity sensors and high-quality titanium alloy electrodes, providing dual guarantees for accurate and stable detection data with fast response speed, corrosion resistance, and wear resistance. It has a longer lifespan and can easily avoid health risks and breeding/production risks caused by poor water quality.
【User-Friendly Design, Convenient and Stress-Free Operation】It is equipped with a large-screen backlit LCD display, allowing clear data reading in both daylight and nighttime, as well as in strong and weak light conditions. It supports data locking function, so during testing, you don't need to hold and observe continuously, making it more convenient to free your hands. It automatically shuts down after 5 minutes of inactivity, effectively saving battery power and providing longer battery life. The one-click operation design makes it easy for both the elderly and children to use without the need for professional knowledge. There is no complex debugging required, and you can start testing as soon as it is turned on.

【Multi-level Protection, Suitable for Multiple Scenarios】With IP67 level waterproof and dustproof performance, it can withstand humid environments and is easy to clean. It can be safely used for detection in wet scenarios such as fish tanks and hydroponics; it comes with an automatic calibration function, eliminating the need for frequent manual calibration, ensuring accurate data over a long period. It is widely compatible with various scenarios including household drinking water, tap water, RO reverse osmosis filtration systems, fish tank aquariums, hydroponic nutrient solutions, swimming pool water, and laboratory water samples, meeting various needs such as family drinking water safety protection, maintaining fish tank water quality balance, optimizing hydroponic plant growth environment, and monitoring the effect of RO filtration systems.

Whether it's conducting daily home water safety tests, or controlling the water quality environment for aquaculture or hydroponic cultivation, this water quality testing pen is your practical and helpful companion. It is suitable for both household and commercial use, providing comprehensive protection for water safety and ecological health, allowing you to feel more at ease every time you use water.