Perfect working,Thanks!
I used 2 extra wireless sensors for the FanJu FJW4 wifi weather station, one for the attic and one for the barn. The one that came with the station is placed outside. It is easy to select for channel 1,2 or 3 by setting the switch in the battery compartiment. The weather station can be set to show each channel alternately for 5 seconds in the 'outside' box on the display . In the Weathersense app you can also change the name for each sensor and set alarms on high/low temperature and/or humidity if you wish, like for temp below zero in the barn. Only one day in use, but the station and app both work fine.