ready-to-use unit
nounUK /ˌredi tə ˈjuːz ˈjuːnɪt/
US /ˌrɛdi tə ˈjuz ˈjunɪt/
A ready-to-use unit is something that is all set up and can be used right away.
The teacher opened the ready-to-use unit and started the lesson right away.
OTHER MEANINGS
2. A self-contained piece of equipment that works as soon as it is connected.
The lab bought a ready-to-use unit for testing water samples.
3. A complete teaching package that needs no extra preparation.
Each ready-to-use unit includes lesson plans, worksheets, and quizzes.
4. A pre-assembled part of a machine that can be installed directly.
The technician replaced the broken pump with a ready-to-use unit.