Feature: 1. APPLICABLE SCENARIO: Oxygen detector with 0~100 percent V0L test range, mainly used for oxygenerator purity test, industry oxygen concentration test, these are need high concentration of oxygen detector measurement range 2. ACCURATE AND SENSITIVE: Oxygen detector has good sensitivity and excellent repeatability, short response time, timely detection and timely alarm 3. WITH ALARM: The instrument support high alarm value and low alarm value setting, beyond the alarm setting value will beep, flash, alarm prompt 4. FAST DETECTION: Oxygen detector meter pump accelerate air flow for fast and accurate detection, plus a hose to measure gas in tight spaces 5. WITH BATTERY: Oxygen detector monitor instrument with built in rechargeable lithium battery, energy saving and environmental protection, say goodbye to cumbersome, battery disassembly is worry free 6. CLEAR BACKLIGHT: O2 detector support the backlight display function, and the value can be clearly displayed at night, easy for you to read Specification: Item Type: O2 Oxygen Concentration Detector Material: ABS Detecting Gas: Oxygen Battery: 1 x 3.7V rechargeable battery, Battery Capacity: 1000mAh Range: 0-100 percent VOL Accuracy: 0.1% Temperature Range: -10℃ to 50℃ Humidity Range: 1%RH to 99%RH Response Time: ≤15s Recovery Time: 15s Sensor Principle: Electrochemical principle Working Time: >90h(continuous operation). Package List: 1 x Detector 1 x Hose 1 x Battery 1 x USB Cable 1 x User Manual 1 x Storage Box