Air Quality Tester, O2 H2S CO EX 4 in 1 Color Screen Handy Compound Multi Gas Leak Detector Alarm,Enjoy the Health Benefits(Yellow (no pump))

O2 H2S CO EX Color Screen Handy Compound Gas Alarm System Portable Multi Gas Leak DetectorFeatures:1. Advanced MCU control with low power consumption2. Advanced integrated circuit technology, embedded microcomputer control3. Adjustable low and high alarm level4. Adjustable calibrating level5. High concentration protection for combustible gas6. Self test for the combustible gas sensor7. Low battery indication8. Self-adjustment function9. Visual and audible alarm with vibration10. Advanced self-examination and self-renovation functionuick View:Gas TypeRangeLow Alarm PointHigh Alarm PointResolutionEX(0-100)% LEL20.0% LEL50.0 %LEL0.1%LELH2S(0-100) ppm10.0 ppm35.0 ppm0.1 ppmCO(0-1000) ppm50.0 ppm150.0 ppm0.1 ppmO2(0-30)% vol19.5% vol23.5% vol0.1 %volParameter Details:Name:4-in-1 Gas Detector color screen DisplayTested Gas Type:EX/H2S/CO/O2Principle:electrochemicalSample Taking:DiffusionTest Range:EX: (0-100)%LEL,H2S: (0-100)ppm,CO: (0-1000)ppm,O2: (0-30)%vol(for other range, can contact to custmized)Resolution:EX: 0.1% LEL;H2S: 0.1ppm;CO: 0.1ppm;O2:0.1%volAlarm point:50%LEL, 35ppm, 150ppm,23.5%volAccuracy:±5%FSRepeatability:within 3%Response time:30 SAlarm mode:sound and light alarm, dual-color LED alarm,sound 75dB@25cmOperation mode:key operation(key life up to 200,000 times)Working temp.:-20~+50(toxic gas)Working humidity:10%RH 95%RH, No condensationWorking pressure:30kPa~200kPaBattery:lithium battery, nominal voltage: 3.7VDC, 2500mAhCharger:2500 mA rechargeable polymer batteryCharging Time:6 hours, 12 hours fully chargedContinuous working time:12 hours(under normal temperature)Size:145×71×36mm(L×W×H)Weight:234 gExplosion-proof mark:Exd ib IIC T4 GbProtection level:IP65

• Curve display：Can display changes of different gas concentrations of a period of time, to help observe and analyze data.
• Portable：Stainless steel alligator clip, small and easy to carry, can be used in all gas detection occasions.
• Material:All metal shell, strong wear-resistant and corrosion-resistant, good hand feeling
• Password management to avoid wrong operation
• Explosive proof housing