How do I silence the alarm temporarily without turning it off?
When the detector is in alarm condition and the CO concentration is less than 200 PPM, press and hold the TEST button to enter alarm silence mode. The buzzer will stop temporarily, but the Alarm indicator will continue to flash. The silent mode lasts less than 10 minutes, and pressing the TEST button again will immediately restore the full alarm condition.
From the official Airam 7126612 Carbon Monoxide Alarm Detector manual, page 3
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