You can add local sprinkler heads to your normal plumbing.
Basically... you tap into your existing plumbing... run a new line and install the heads.
Won't meet NFPA code but it works just fine.
Yep and since it doesnt meet code insurance companies wont cover damages if the sprinkler head decides to puke and flood the area which they do. Fun to wake up in the morning or come home and find a river going out the garage.
