Is there a smoking alarm in Hangzhou Feng Wan Hotel?

No, the general smoke sensor will only start when the smoke reaches a certain range. The main device inside is a smoke concentration sensor, which will only start when the surrounding smoke concentration reaches 300λ /_.

Under normal circumstances, the current and voltage of the inner and outer ionization chambers are stable. Once there is smoke, the ionization chamber outside will disappear quickly. If the normal motion of charged particles is disturbed, the current and voltage will change, which will destroy the balance between the inner and outer ionization chambers. So the wireless transmitter sends out a wireless alarm signal to inform the remote receiving host and send alarm information.