
To keep your UEi DAFM4 Digital Air Flow Meter running continuously, you can disable the auto power-off function. Here's how: First, make sure the meter is turned off. Then, simultaneously press and hold both the ON/OFF button and the HOLD button for more than two seconds. The display will show an "n" symbol, which confirms that the auto power-off feature is now disabled. With this setting, your UEi DAFM4 will stay on, allowing for uninterrupted measurements.


