Is it normal for the hotel's smoke alarm to flash? Could it be a camera?

It is normal. It is a smoke alarm. The port next to it is for detecting smoke, not for monitoring.

Smoke alarm, also known as fire smoke alarm, smoke sensor, smoke sensor, etc.

Powered by the bus, multiple ones can be connected to the bus. They are networked and communicated with the fire alarm controller to form an alarm system. There is no sound when the alarm occurs, and the host has audible and visual prompts. This type of smoke alarm device Generally called smoke detectors. Smoke detectors are available with or without address coding.

Extended information:

Working principle

In terms of internal principles, smoke alarms achieve fire prevention by monitoring the concentration of smoke. Smoke alarms The ion smoke sensor is used internally. It is a sensor with advanced technology and stable and reliable operation. It is widely used in various fire alarm systems and its performance is much better than that of gas-sensitive resistance fire alarms. ?

It has a radioactive source of americium 241 in the internal and external ionization chamber. The positive and negative ions produced by ionization move toward the positive and negative electrodes under the action of the electric field. Under normal circumstances, the current and voltage of the internal and external ionization chambers are stable.

Once smoke escapes from the ionization chamber. Interfering with the normal movement of charged particles, the current and voltage will change, destroying the balance between the inner and outer ionization chambers, so the wireless transmitter sends out a wireless alarm signal to notify the remote receiving host and transmit the alarm information.

Composition

A smoke alarm is composed of two parts: one is an induction sensor used to detect smoke, and the other is a very loud electronic speaker, which can alert people in time in the event of danger. .

Smoke alarms use positive and negative ions produced by ionization of americium, a radioactive source, to move toward the positive and negative electrodes under the action of an electric field. Under normal circumstances, the current and voltage of the internal and external ionization chambers are stable.

Once smoke escapes from the ionization chamber. Interfering with the normal movement of charged particles, the current and voltage will change, destroying the balance between the inner and outer ionization chambers, so the wireless transmitter sends out a wireless alarm signal to notify the remote receiving host and transmit the alarm information.

Baidu Encyclopedia - Smoke Alarm

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