Portable Oxygen Detector, Rechargeable O2 Monitor with Sound, Light, Vibration Alarms, Oxygen Air Quality Meter Measures Temperature & Humidity for Indoor Outdoor Use

【Fast Response & Accurate】Our oxygen monitor uses a high-precision electrochemical sensor for real-time 0.5 second oxygen gas detection from 0-30% range with +/-5% accuracy. Featuring 0.1% resolution, the O2 monitor enables accurate detection of low-level oxygen gas concentrations.
【Triple-Alert Protection】This oxygen meter features a triple-alarm system: sound, light, and vibration that automatically triggers when oxygen levels exceed the default 19.5%-23.5% threshold range, ensuring reliable warnings in all environments and enhanced safety.
【Rechargeable Battery & Long-Lasting Life】Portable O2 air quality monitor with a 2500mAh built-in battery, offering up to 16 hours of continuous operation and Type-C charging. Automatic stores up to 180 alarm logs for easy O2 gas monitoring and safety analysis.
【User-Friendly O2 Meter】The oxygen detector features a 2.8” large LCD screen for clear readability, displaying real-time O2 levels, Max/Min values, ambient temperature (℃/℉), and humidity. Clip-on design allows hands-free operation for worker in industrial and home safety O2 monitoring.
【Factory-Calibrated & Portable】This portable Oxygen Analyzer comes calibrated from the factory, with 2-Year sensor lifespan. Widely used in industrial oxygen safety, firefighting & emergency rescue, ambient air measurements, mining, underground work and labs.