They are not universal. Please understand the bayonet type of the body/lens cap before purchasing. 

Yes, both wireless and wired controllers are compatible. 

You will see data from the outside sensor on your console. Look for rain, wind speed, wind direction, UV strength, temperature etc 

The display console unit can run on batteries only. However, without the a/c power cable, the display only stays on for seven seconds, and to get the display to come on, one has to press a button on the display console. Also, when running on batteries only, the unit will not maintain a wifi connection, so it won't reliably upload weather data to WeatherUnderground or other weather networks. 

this quick release plate is mainly for K&F tripods . the size is 4.8 * 4.8 * 1 cm, please judge whether could be put in your ball head.