The battery operated remote stations (3 supplied) are very useful, with the master unit 4 temperature and humidity readings are possible. I use my weather station to monitor the temperature/ humidity near the lounge room thermostat, the landing for upstairs and the conservatory. The master unit is used to monitor the readings by the seating area in the lounge.
One of the remotes has a small digital read-out for local observations and the master display shows all four sets of readings together in 4 different colours.
The master unit is mains powered with battery back-up.
Checking the unit accuracy, I found the readings to be better than 0.5*C.
The master unit also has a pressure sensor used to display a plus 12 hour weather forecast in picture format.
I found this Station very useful and at a very good price.