Traditional Culture Encyclopedia - Hotel accommodation - How to say master switch in hotel English?

How to say master switch in hotel English?

master switch

English [? m \u: ST? swit? ] beauty [? m? st? sw? t? ]

[Dictionary] Master switch; Master switch;

[Example] The first one is the central main switch, which is the heart of the whole monitoring system.

The first is the centralized master switch as the core of the whole monitoring system.