I own two Rangemen - GW9400CMJ-3 (Camo) and GW9400-3 (olive negative) .
The Baro readings/line on the baro graph of the Camo Rangeman always starts 1 hPa higher than the Olive's baro graph. It also looks more "noirotic", meaning it looks like it's more sensitive than than the Olive's, so it changes +/-1 hPa more frequently.
The Baro value on he Camo is always 1 hPa higher than the Olive's - e.g. 1015 hPa vs 1014 hPa, respectively.
I've reset them both by pressing the "Adjust + Mode + Forward" combination, and then set them both with the same coordinates.
Question is does the Camo has a fault baro sensor?
Please see pictures below: