Can the flashing red in the hotel be a camera?

1. Smoke sensor: This kind of equipment in the hotel will emit red light when working, which is used to detect whether there is smoke or fire in the room.

2. Other equipment: hotel temperature sensor or fire alarm, etc. These devices also emit red light.

3. Camera (or webcam) is a video input device, which belongs to a kind of closed-circuit television. It is widely used in video conferencing, telemedicine and real-time monitoring. The camera has the basic functions of video shooting, transmission and still image capture. After the image is collected by the lens, it is processed by the photosensitive element circuit and control element in the camera, converted into a digital signal that can be recognized by the computer, and then input into the computer through the parallel port and USB connection.