<p>12 in 1 Function:Temperature\/Humidity\/Time\/CO\/CO2\/Curve \/TVOC\/\/PM2.5\/PM10\/Formaldehyde</p> <p>Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!</p> <p>Directions:Main interface click to switch the temperature, double-click to turn off the sound, 3 click to enter the calibration interface (calibration interface does not support the operation, unless the power off), 4 click to enter the rest screen (rest state click to brighten the screen), 5 click to enter the curve and the formaldehyde interface (curve interface click to switch the PM2.5, formaldehyde, TVOC, formaldehyde comparison interface, (formaldehyde comparison interface according to the double-click to record the last group of data, and then double-click to record group of data) 6 click to enter the time setting interface, time settings. Enter the time setting interface, time setting interface 3 click is to choose to change, click plus 1, double-click minus 1, set the completion of the 5-click exit, or wait 5 seconds to automatically return to the main interface. 7 click to enter the temperature adjustment interface (temperature adjustment interface, click plus 1 degree, double-click minus 1 degree, 5-click exit, or five seconds of no operation to exit the interface)</p> <p>Color: Black</p> <p>Material: ABS</p> <p>Package Contents:</p> <p>1 x 12 in 1 Air Quality Tester</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>