Fine Oxygen(O2) Concentration Detector Mini Oxygen Meter Gas Analyzer with LCD Display and Sound-light Alarm for Home Security

The portable oxygen detector is a kind of  essential safety instrument which can continuously detect the oxygen concentration in the working environment.It is suitable for explosion-proof, toxic gas leakage, underground pipelines or underground mines and other  places, can  effectively ensure the safety of the staff's life is not  infringed, the production equipment is not lost.  
This instrument is a natural diffusion method for detecting gas concentration, using high performance electrochemical sensor, with excellent sensitivity and excellent repeatability.The instrument adopts embedded micro control technology, simple operation, complete functions, high reliability.  
This O2 detector is applicable to the concentration of oxygen in the ambient air detection, are widely used in metallurgy, power plant, chemical, mine, tunnel, underground pipelines and other places, effective prevention of hypoxia and oxygen poisoning.
Features:
Appearance of light and novel, easy to carry, easy to operate.  
Menu operation interface, battery power real time display.
Under voltage, low voltage automatic shutdown.
Rapid response and reliable accuracy.
Sound, light and vibration alarm.
Specification:
Sensor: Electrochemical Principle
Test Gases: Oxygen Concentration (O2)
Temperature Measurement: Ambient Temperature  
Display Unit: O2: %VOL
         Temperature: Centigrade / Fahrenheit      
Measurement Range: O2: 0 ~ 25%VOL
             Temperature: -15~50 Centigrade / 5~122 Fahrenheit   
Resolution: O2: 0.1%VOL                                            
        Temperature: 0.1 Centigrade / 0.1 Fahrenheit
Accuracy: O2: ±3.0%FS                                                  
       Temperature: ±1.5 Centigrade
Response Time: T90<15s              
Alarm: Sound and light vibration alarm  
Alarm Point: low alarm point 19.5%VOL              
         high alarm point 23.5%VOL          
Battery Type: 3 * AAA 1.5V Alkaline Batteries (NOT Included)
Operating Temperature: -15~50 Centigrade / 5~122 Fahrenheit   
Operation Humidity: 15%~95%RH (non condensation)
Item Size: Approx. 12 * 6.5 * 2.5cm / 4.7 * 2.5 * 1.0in (L * W * H)
Item Weight: Approx. 107.1g / 3.8oz
Package Size: Approx. 22.5 * 11.1 * 5.5cm / 8.9 * 4.4 * 2.2in (L * W * H)
Package Weight: Approx. 182g / 6.4oz
Package List:
1 * O2 Detector
1 * User Manual