[New Upgraded Water Electrolyzer] This water quality tester is small and lightweight, strong and durable. It has positive and negative 2 electrodes (one is an iron rod and the other is an aluminum rod) to better test water quality. [Fast and Convenient] This water quality electrolyzer offers you a convenient way to test water quality. [Easy to use] With our simple operation, our water quality testers offer you a fast and convenient way to test water quality. [Perfect replacement] This water pollution tester is a fast and convenient alternative to test paper and liquid test kits. [Wide applications] This water quality tester can be used to test the degree of water. It is perfect for drinking water, water filtration and purification, hydroponics, aquariums, swimming pools and spas. Practical: easy to use, fast testing with clear test results. It is easy to install, easy to , lightweight, easy to carry, it is a simple and inexpensive way to test water quality, check the condition of your drinking water. The water appears to change color after electrolysis to indicate different impurities in the water. Voltage: 220V Plug type: EU plug, it is applicable to Indonesia, Germany, , Spain and so on Color: Black+Yellow Material: Plastic + Metal Package contents: 1 x Water Quality Tester Note: Do not hold the electrode with your hands when it is turned on. Do not put your finger in the test water. Do not let children play with it. After the electrolyzer is used up, a dry cloth is placed on the electrode to dry, and the water on the iron rod is wiped off with gauze and preserved. The above package contents only, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.