wintact WT8822 Hydrogen Sulfide Detector LCD Display H2S Gas Tester Hydrogen Sulfide Concentration Detecting Gauge Meter The product is shipped based on the color or size of the main image of the product page. The compact and portable hydrogen sulfide detector is designed for detecting hydrogen sulfide concentration. It uses high-quality gas sensor to achieve accurate measurement and stable performance with safety and reliability. It meets stability requirement of industrial site safety monitoring on equipment's high reliability, widely used in household, chemical industry, mining industry, environmental protection, gas transmission and distribution, biochemical medicine, agricultural research and so on. Features: High-definition screen to display measured values, data hold function for conveniently reading. Maximum value and minimum value measurement, stable performance to ensure safety and reliability. Buzzer alarm ON/OFF selection, high/low alarm adjustable. Unit switch among %VOL, %LEL, PPM, mg/m3. Compact and mini size combustible gas detector is lightweight and portable. Widely used in household, chemical industry, mining industry, environmental protection, gas transmission and distribution, biochemical medicine, agricultural research and so on. Specifications: Material: ABS Measurement Range: 0~100PPM, 0~0.01%VOL, 0~152mg/M3, 0~0.23%LEL Maximum Overload: 500PPM Respond Time: