Can the hotel smoke sensor not be linked?

You can't. The smoke sensor must be linked before it can be used. When the smoke detector in the guest room gives an alarm, the signal should be immediately transmitted to the fire control center, and a fire alarm bell or audible and visual alarm should be added to ensure that the exhaust fan on the roof of the guest room in the liquor hotel is linked with the fire control, and smoke detectors and broadcast speakers should be added to the men's and women's toilets in the public areas of the hotel.