Features: 1Experience the convenience of water testing with this 4-in-1 water quality testing pen. Equipped with multiple sensors, it accurately measures pH level, conductivity, TDS (Total Dissolved Solids), and temperature. Ensure the safety of water supply with this water quality testing pen. Designed to be compact and user-friendly, it provides quick and accurate readings of pH, conductivity, TDS, and temperature. Whether you're testing your tap water or a swimming pool, this pen will give you peace of mind knowing that water is safe and clean. Take the guesswork out of water testing with this convenient 4-in-1 water quality testing pen. Its advanced technology allows you to measure pH level, conductivity, TDS, and temperature with just one tool. Compact and portable, this pen is perfect for homeowners, aquarium enthusiasts, and laboratory professionals alike. Stayinformed about water quality with this reliable blue 4-in-1 water quality testing pen. Featuring an intuitiveinterface and accurate sensors, it measures pH, conductivity, TDS, and temperature effortlessly. Whether you are monitoring your drinking water or checking the water in your hydroponic system, this pen provides the information you need to make informeddecisions. Simple water testing routine with this 4-in-1 water quality testing pen. Designed for ease of use, it measures pH, conductivity, TDS, and temperature accurately and efficiently. Whether you're a hobbyist or a professional, this pen is an essential tool for maintainingoptimal water conditions in various applications. Specifications: Material: plastic Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xWater Quality Tester