The hotel room fire sensor flashes red. Is it a camera?

No, that's the smoke detector in the fire fighting equipment in the hotel room, also called smoke fire detector. The flashing red light proves that it is in normal working condition.

The smoke detector flashes from time to time, usually red. Whether the hotel smoke detector is a smoke camera only needs close observation, and ordinary smoke detectors are generally not clearly marked on the outer ring.

Extended data

Fire smoke detector can realize fire prevention by monitoring the sensed smoke concentration, which can also be called smoke fire detector. Made of photoelectric sensor with special structure and patch processing technology, it has the characteristics of high sensitivity, stability and reliability, low power consumption, beautiful and durable, and convenient use. Circuit and power supply can be self-checked, and analog alarm test can be carried out.

References:

Baidu encyclopedia-fire smoke detector