Ensure the air you breathe is safe and clean with this high-precision Handheld O2 Detector, designed for accurate and real-time oxygen monitoring. Featuring a wide measurement range of 0-30% Vol, this oxygen tester delivers reliable and sensitive detection with a clear high-definition LCD screen that displays oxygen levels alongside time, date, temperature, and humidity for comprehensive environmental awareness. Key Features: · High Accuracy and Sensitivity: Precisely measures oxygen concentration from 0 to 30% Vol, providing dependable readings to help you monitor air quality effectively. · Real-Time Monitoring with Fast Sampling: Updates oxygen levels every 1.5 seconds, allowing you to respond promptly to any changes. The built-in alarm alerts you when oxygen levels rise beyond preset limits, with an option to disable the alarm if needed. Calibration capability ensures sustained measurement accuracy. · Rechargeable Long-Lasting Battery: Equipped with a built-in 2000mAh rechargeable lithium battery, this detector supports continuous use for up to 24 hours after a quick 2-hour charge via the convenient micro USB interface, eliminating the need for frequent battery replacements. · Clear and Adjustable Display: The high-definition LCD screen offers easy-to-read data at a glance, with adjustable brightness settings to protect your eyes under various lighting conditions. · Versatile and Portable Design: Comes with a stable stand for hands-free use and is compact enough for easy storage and transport. Ideal for indoor environments such as homes, offices, classrooms, as well as outdoor activities and travel. Specifications: · Item Type: Handheld O2 Detector · Screen Display: High Definition LCD Screen · O2 Detection Range: 0-30% Vol · Temperature Detection Range: -10℃ to 50℃ · Humidity Detection Range: 20%-85% RH · Sampling Time: 1.5 seconds · Battery: Built-in 2000mAh Rechargeable Lithium Battery Package Includes: · 1 x Handheld O2 Detector This handheld oxygen detector is an essential tool for anyone seeking to monitor air quality accurately and conveniently. Its fast response time, long battery life, and comprehensive environmental data display make it perfect for ensuring safe breathing conditions in a variety of settings.