Feature:1. Detect 4 kinds of gas: carbon monoxide(CO), hydrogen sulfide(H2S), oxygen(O2) and combustible gas(LEL).2. Using high performance electrochemical sensor, with excellent sensitivity and excellent repeatability.The instrument adopts embedded control technology, simple operation, complete functions, high reliability.3. Color-screen display, user-friendly interface. There are six icon options in the main menu, namely, single measurement, multiple measurement, viewing record, alarm setting, system setting, and calibration.4. Data recording and review function, continuously record 12,000 data. Review function display waveform graph easy to view data.5. Bilingual Choices: Chinese and English.6. Three alarm forms: Sound, light and vibration.7. Battery power real time display.8. Can be widely used in petroleum, chemical, environmental conservation, metallurgy, refining, gas transmission and distribution, biochemical medicine, agricultural research, etc.Specification:4 in 1 Gas Monitor adopts high-quality gas sensors, which displays safety and reliability with accurate measurement and stable performance. It has excellent sensitivity and repeatability, easy to use and maintain, and meets the requirements by safety monitoring in industrial site for high reliability of the equipment. The shell is made of high strength engineering plastics and compound non-slip rubber, dust and explosion-proof, with high strength and smooth handfeel.Features:Detect 4 kinds of gas: carbon monoxide(CO), hydrogen sulfide(H2S), oxygen(O2) and combustible gas(LEL).Using high performance electrochemical sensor, with excellent sensitivity and excellent repeatability.The instrument adopts embedded micro control technology, simple operation, complete functions, high reliability. Color-screen display, user-friendly interface. There are six options in the main menu, namely, single measurement, multiple measurement, viewing record, alarm setting, system setting, and calibration.Data recording and review function, continuously record 12,000 data. Review function display waveform graph easy to view data.Bilingual Choices: Chinese and English.Three alarm forms: Sound, light and vibration.Battery power real time display.Can be widely used in petroleum, chemical, environmental conservation, metallurgy, refining, gas transmission and distribution, biochemical medicine, agricultural research, etc.Specification:Color: Black + redMaterial: ABS plasticDetection Gas: Carbon Monoxide(CO), Hydrogen Sulfide(H2S), Oxygen(O2), Combustible Gas(LEL)Unit: CO: μmol/mol, H2S: μmol/mol, O2: %VOL, LEL: %LELMeasurement Range: CO: 0～1000μmol/mol, H2S: 0～100μmol/mol, O2: 0～30%VOL, LEL: 0～100%LELResolution: CO: 1μmol/mol, H2S: 0.1μmol/mol, O2: 0.1%VOL, LEL: 0.1%LELAccuracy: CO: 0~50μmol/mol(≤±5μmol/mol); 50~1000μmol/mol(≤±10μmol/mol), H2S:≤ ±5%FS, O2: ≤ ±5%FS, LEL: ≤ ±5%FSAlarm: Sound & light vibration alarm (Alarm value can be set) Response Time(90%): Less than 30 seconds Working Voltage: DC3.7V, 1800mAh Battery Model: LP103450-1800mAh rechargeable lithium batteryExplosion-proof Certificate NO.: CNEx 18.5122Explosion-proof Mark: Ex ib IIB T3 GbOperating Conditions: -20～50℃ / -4～122℉, < 95%Storage Conditions: -10～50℃ / 14～122℉, < 85%Storage Case Size: Approx. 267 * 162 * 78mm / 10.51 * 6.38 * 3.07inItem Size: Approx. 138 * 71 * 49mm / 5.44 * 2.80 * 1.93inItem Weight: Approx. 251g / 8.88ozPackage Weight: Approx. 996g / 35.13ozPackage Size: Approx. 28.5 * 18.5 * 8cm / 11.22 * 7.29 * 3.15inPackage List:1 * 4 in 1 Gas Detector1 * Plastic Pipes1 * USB Cable1 * Storage Box1 * User Manual (English)Package List:1 * 4 in 1 Gas Detector1 * Plastic Pipes1 * USB Cable1 * Storage Box1 * User Manual (English)