really like this weather station. My old device, which I've been proud of for a long time, has started to have problems and no longer connects properly to the outdoor sensor. So this is a welcome replacement. The scope of delivery includes the main display, the outdoor sensor, a USB cable with plug and a user manual. Set up is very simple, the main unit either requires batteries or you can plug them in, the outdoor sensor requires batteries, once operational there is a row of buttons on top of the main display unit that you can use to change the time, date etc. Or if you connect the device with the cable like I did, it will set itself automatically. The outdoor sensor hooked up with no problems, but there are two small buttons (test and temperature) and a switch on the inside of the battery compartment that allows you to change the channel it's transmitting from should you find it can't connect Slide the switch and see if that helps. I mounted the outdoor sensor on the wall of our shed about 10 feet from the unit that sits on the kitchen windowsill and it works perfectly. I love the big, clear color display (my old one was black and white) and the moon phases that I had on my last device, which I was dying to keep. My only criticism of this device is that the color display goes dark after 10 seconds on battery power by default. In order to be able to use the device optimally, it is essential to connect it. There's also an alarm clock function if needed, but I don't use that. All in all, this is a great article and I hope to spend as many years on it as I did on my last one.