1) It usually takes 7-10 days to calibrate.

2) If it is moved from one environment to another (such as bringing the sensor from outside to inside in winter), a calibration time of several hours may be required.

No.If the detection chip is added with a waterproof layer, it cannot be fused with the air directly, which will result in poor detection sensitivity & inaccurate humidity. Our chip detects the air directly, with higher accuracy & better flexibility.

The default time zone of the weather clock is PST and the DST is OFF, you only need to simply set your standard time zone and ON/OFF DST according to the instructions when you use it for the first time. Then the clock won't be wrong.

1) The clock will search for the WWVB signal automatically at 1:00-1:07, 2:00-2:07, and 3:00-3:07am every day.

2) If the WWVB signal is interfered or weak, it will also search WWVB once an hour. such as 10:00-10:07am,11:00-11:07am,12:00-12:07am.

Yes. Since the WWVB signal is susceptible to interference from many factors, turning off the screen during the search can shield some interference factors.