self-contained system

Translations
автономная система
The spacecraft is equipped with a self-contained system for life support.
Космический корабль оснащен автономной системой жизнеобеспечения.
Definitions
A self-contained system is a system that operates independently and does not rely on external resources or inputs to function. It has all the necessary components and processes to maintain its operations and achieve its objectives without needing assistance from outside sources.
Words
system

noun
система
self-contained

adjective
самодостаточный