1、Wide Range of Uses: Suitable for mining, oil exploration, chemical and pharmaceutical, gas stations, ship transportation, gas stations, etc. 2、High Sensitivity: Equipped with high quality gas sensors, high sensitivity, providing accurate and rapid measurement. 3、ABS Material: Use durable materials, waterproof, dustproof, explosion proof, IP65 protection level, long service life. 4、4 in 1 Design: Support the detection of EX H2S CO O2, the detection error is less than or equal to ±5% F.S., and the response time T<30s. 5、High Stability: Support USB charging, low power consumption, high resolution, stable performance and long service life. 1 x Gas Detector1 x USB Cable1 x Manual1 x Storage Box Item Type: Gas DetectorMaterial: ABSWeight: Approx. 820g / 28.9ozEX Detection Range: 0-100% LELEX Detection Resolution: 1% LELH2S Detection Range: 0-100ppmH2S Detection Resolution: 1ppmCO Detection Range: 0-1000ppmCO Detection Resolution: 1ppmO2 Detection Range: 0-30%VOLO2 Detection Resolution: 0.1%VOLDisplay Error: ≤±5%FSResponse Time: T＜30sWorking Environment: Temperature -20℃-50℃; Humidity <95%RHVoltage: 5VBattery: Polymer Lithium Battery 1800mAh (Included)Charging Time: 4-6hStandby Time: About 10hProtection Level: IP65Product Size: Approx. 13.7x 6.9x5cm / 5.4x 2.7x 2.0in