YY-400H can measure H2 (0-4000PPb;0-4.000 ppm) and temperature (0.1-60.0C; 32.0-140F) with high accuracy. Comprehensive measurement of water quality to ensure healthy water quality.Accurate measurement: In order to achieve high precision, it is equipped with high-quality titanium alloy probes and reliable automatic temperature compensation (ATC) to ensure that accurate readings can be maintained at different temperatures.Automatic shutdown function: automatically turn off the power, automatically turn off the power after 5 minutes, without any operation to save power.IP67 waterproof rating: Dustproof and dustproof, soak compatible a short time.Wide range of applications: water quality detectors are suitable compatible water quality detectors, swimming pools, aquariums, hot springs, hydroponics, laboratories, drinking water, etc.The content of dissolved hydrogen in water has become one of the indicators compatible determining hydrogen-rich water. The hydrogen content value can be read by putting the hydrogen detection pen directly into the hydrogen-rich water, which is convenient compatible detection and easy to carry. YY-400H hydrogen content detection pen is developed compatible measuring the dissolved hydrogen content in hydrogen-containing water generators and generators, and measures the dissolved hydrogen content in water bodies. Suitable compatible hydrogen-rich water machine, hydrogen-rich water cup, hydrogen water stick, hydrogen-rich kettle, etc.Colour: black + whiteMaterial: plasticSize: 183mmPackage Contents:1 x H2/TEMP MeterOnly the above package content, other products are not included.Note: Light shooting 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 +/- 1-3cm.