As soon as I close the gate, the hotel's monitoring system will shut down. How to turn it on?

To correct your statement, the hotel monitoring system should be called the hotel security closed-circuit monitoring system.

It's not a hotel monitoring system, but a security monitoring product that displays security monitoring pictures.

Just like TV sets, TCL, Maiwei, Tiger monitors and other special security monitors.

The whole system is called closed-circuit monitoring system.

Hotel monitoring system, please turn off the main switch, it should be the main switch of power supply, right?

You turn off the main power switch, of course, the monitoring system will turn off when there is no electricity.

How to drive? If you turn on the power supply of the monitoring system again, it will naturally work normally after being electrified.