gas detector Welcome to Vzmcov Gas Detector This 4-in-1 detector is definitely the right choice to protect you and your family's health and property. Vzmcov is a business company specializing in the development, production of gas detectors, All of our products are in high quality but very competitive price. Thank you for visiting! Gas type Range Low alarm point High alarm point Resolution: Combustible gas(LEL): 0-100% with 1% resolution Oxygen (O2): 0-30% with 0.1% resolution Carbon monoxide (CO): 0-1000 with 1ppm resolution Hydrogen sulfide (H2S): 0-100ppm with 1ppm resolution Working Environment: -20℃～50℃, ＜95%RH (no dew) Power Source: DC3.7V Li-on battery, 1800mAh Protection Grade: IP65 Inspect various sites Normally, It is more hazardous to work in a confined place than normal workplaces. It is necessary to testing and monitoring the atmosphere of the potential dangerous gas accumulation. Vzmcov portable 4 gas monitor can effectively predict the alarm of dangerous gas concentration, ensure the workers safety and health. Widely Used Locations: The multi gas leak detector is suitable for persons who spend time in petroleum, gas, chemical, metallurgy, refining, agriculture, fire fighting, etc. Product Parameters: Comes Factory Calibrated Display Error: ≤±5% FS Response Time: <30s Purpose and Environment Our multi-gas detector used advanced integrated circuit technology, embedded microcomputer control, high quality imported gas sensor, excellent sensitivity and excellent repeatability. Applicable Occasions and Crowds: Robust for industrial use for utility workers, refinery workers, firefighters, maintenance engineers, those who spend time in sewers and waterworks,underground storage tanks, oil rigs, in tanks and silos in the maritime industry, and many others who need personal protective equipment.