Vxdefp Ws-Dm77 Gas Detector, Portable Co2 Temperature Humidity Monitor Air Quality Infrared Ndir Detector
VXDEFP
1.Common Screen display ,Test variables:Carbon dioxide (CO2),temperature, humidity ,Large 1600mAh capacity Lithium battery ,5V USB charging 2.When you long-press the power button, the air quality monitor will boot up. 3. Power button, long-Press to turn on/off, Double-click to set CO2 alarm thresold.(800~2000 ppm) Left button, click to decrease CO2 alarm thresold. Right button, click to increase CO2 alarm thresold; long pressto open/close CO2 alarm sound. 4.When low battery is displayed, the device needs to be charged. Insert the included or another compatible micro USB charging cable into the device. Attach the other end to a USB DC charger (such as a smart phone charger) that outputs DC 5V at>=1000mA. Fully charge for at least 2-3 hours before use. 5.Avoid charging with a USB computer port which only outputs 500mA., Manufacturer: VXDEFP
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