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Portable CO Detector (Carbon Monoxide Detector), Alarm Temp/Humidity Detector with Magnetic Back, Built-in 1000mAh Battery for Home/Travel/Outdoor

SKU: GW40.0008

Q
How often does it have to be calibrated ?
Answer Question
A
Every time it's powered on, it goes through a little 20 second self-calibration routine. You can override it by pressing one of the buttons on the front of the unit.
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