trendmedic TM-9500 Professional, Руководство по эксплуатации

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The WAIT displays on the screen and countdown 15, 14, and 13… to zero.
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The BLOW displays on the screen, and displays “C” with flashing. Take a deep breath,
blowing steady into the mouthpiece until beeping stops (about 6 seconds).
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Your test result will be displayed on the screen for 20 seconds.