Portable CO Detector 3-in-1 Carbon Monoxide Detector, Kentfaith Alarm Temp/Humidity Detector with Lanyard and Magnetic Suction Function, Mini CO Monitor with 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.