Detects CO2,6-in-1 Indoor Air Quality Monitor, PM2.5, PM10, AQI, Temperature and Humidity with Alarm, for Rooms, Cellars, Grow Tents, Offices, etc.
SKU: GW40.0006
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Our PTH-9C CO2 Detector has calibration capabilities. You can press three buttons at the same time in an open environment after shutdown and let it stand for 200 seconds to calibrate this CO2 meter.
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Sorry, our CO2 detectors can only calibrate CO2 values.
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The calibration is super simple. Press all 3 buttons until the a timer appears and counts down from 200 seconds. It requires the user to place it out doors to calibrate to 500ppm which is the average ppm outdoors.
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When fully charged, the device can stand by for 24 hours. Since the detector contains 3 sensors, the battery drains relatively quickly, we recommend connecting the adapter to use it.
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Sorry, the time of our PTH-9A detector uses a 24-hour clock and cannot be changed to a 12-hour clock. Hope this information is helpful to you.
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manual says long press - and O at the same time
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Yes, since there are three sensors in the detector, the power consumption is relatively fast, so we recommend customers to connect the charger to use it. Hope this information is helpful to you.
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Sorry, Our detectors use single-beam NDIR sensors. Hope this information is helpful to you.
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Double-click ""O"" to enter the setting, then click ""+"" or ""-"" to set the alarm value. After setting, click ""O"" to confirm the setting and return to the home page. Hope this information is helpful to you.