What's this thing in the hotel? It also flashes red every ten seconds or so...

Fire detector

Fire automatic fire alarm system, the scene to explore, find the fire equipment.

Fire detectors are the "sense organs" of the system, its role is to monitor the environment there is no fire. Once there is a fire, the fire characteristics of physical quantities, such as temperature, smoke, gas and radiation light intensity, etc. into electrical signals, and immediate action to the fire alarm controller to send an alarm signal.

Advantages: No matter what that produces the detector, can detect the occurrence of fire, and have a relatively high sensitivity. All of them are relatively simple in installation.

Disadvantages : the production of equipment can not be generalized, independent of the positive, not only can not replace each other. And can not communicate with each other.