Accuracy, innovative features, & unbeatable affordability in one small, user-friendly CO2 Monitor. To deliver its measurements, the autopilot APCEM2 desktop CO2 Monitor features a clear display system that boasts a digital Chart of memory-logged CO2, relative humidity, & temperature readings over an adjustable 24-hour or 24-day period. With the industry-new feature trend Chart, the device is able to trace the above quantities through past Min, hours, or up to 7 days. The autopilot APCEM2 desktop CO2 Monitor is patent pending, featuring a hook-and-loop fastener along the back that can securely affix a rectangular external battery Pack. By maximizing mobility, the device can be easily moved to any room-living room, kitchen, office-to Monitor iaq virtually anywhere. The autopilot APCEM2 desktop CO2 Monitor can be powered by almost any standard USB port that provides power, such as a laptop, a wall adapter, or an external mobile battery Pack (powerbank). battery Pack & computer not included. Log feature allows the user to see historical data recorded in the log at any point that is displayable on the chart. First make sure the desired Zoom Level is selected before enabling this function. Then once LOG is enabled, use "up" and "down" toggle between the time divisions to see all parameters’ measurements for each division.Press "enter "once more to exit This mode /temperature or humidity error please turn off power adapter, and put the device in a dry place more than 12 hours. CO2 measurement Accuracy at 0 -3000 ppm: ±50 ppm or ±5% of reading, whichever is greater, Accuracy over 3000 ppm: ±7%
