turnkey
turn‧key /ˈtɜːnkiː $ ˈtɜːrn-/
adjective [only before noun]
ready to be used immediately:
the development and sale of turnkey systems for telecommunications customers
turn‧key /ˈtɜːnkiː $ ˈtɜːrn-/
adjective [only before noun]ready to be used immediately: