There is no difference between indoor or outdoor equipment. You can use the same items for indoors and outdoors.  The main difference is whether you need live scoring or not.

In most cases when the operator runs outdoor games at some fixed location, he is able to establish a wifi network for collecting statistics from X-gen or Alphatag equipment generation.  Even if most games are held in the woods it is possible to get wifi router with a power bank there, but if you don't need live scoring at all you can buy 9th generation.