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Handheld Digital Oxygen Detector Air Oxygen Concentration Alarm Value USB Rechargeable Portable O₂ Content Tester 2.8-inch TFT Full Color LCD Screen Oxygen Meter with Temperature and Humidity for Car Home Office School Hospital 2.8 inch LCD color display. Celsius °C and Fahrenheit °F switch, long press / key to switch. Display concentration and temperature and humidity values, curve interface. display brightness adjustment 5%-100%, default brightness of 60%, 10 seconds after screen saver minimum brightness, press any key can be restored to 60% brightness. excessive alarm peak buzzer sound (excessive alarm sound can be eliminated by pressing any key) + digital color change (alarm value default standard value), you can set 1%-30% alarm value. Data saving function (can store 100000 data), set timing storage, delete data, view historical data.<br><br>A8 detector has function of detecting temperature and humidity, using all sensors are mainstream industrial grade, using 2.8-inch TFT color LCD display, suitable for automobiles, schools, homes, hospitals, shopping malls, and so on.<br><br>Specifications:<br>Battery Capacity: 2500mAh<br>Material: ABS<br>Item Weight: 200g / 7.05oz<br>Display Size: 43.2 * 57.6mm<br>Standard Charging Voltage: 5.0±0.5V<br>Measurement : 0-30VOL<br>Temperature Measurement : -9~55<br>Resolution: 0.1%<br>Package Weight: 332g / 11.71oz<br>Humidity Measurement : 0RH~100RH<br>Package Size: 22.5 * 13 * 4cm / 8.85 * 5.12 * 1.57in<br>Item Size: 178 * 75 * 32mm / 7.01 * 2.95 * 1.26in<br>Color: Grey<br>Working Environment: -9~55 90RH<br>Display Resolution: 240 (3RGB) * 320<br>Display Method: 2.8 inch TFT LED backlight LCD screen<br>Model: A8<br><br><br>Package List:<br>1 * Content Detector<br>1 * Type-C Charging Cable<br>1 * User Manual (English)<br>

• Data saving function (can store 100000 data), set timing storage, delete data, view historical data.
• Oxygen excessive alarm peak buzzer sound (excessive alarm sound can be eliminated by pressing any key) + digital color change (alarm value default standard value), you can set 1%-30% alarm value.
• Celsius °C and Fahrenheit °F switch, long press the / key to switch.
• Display the oxygen concentration and temperature and humidity values, the curve interface.
• The display brightness adjustment 5%-100%, the default brightness of 60%, 10 seconds after the screen saver minimum brightness, press any key can be restored to 60% brightness.