Ask for help. What about the smoke alarm in the foreign country?
There is room to smoke a smoke alarm (in fire control referred to as the "smoke"), you can call the police, if must say that people in the concentration of smoke concentration is choking the room feel (like many people smoking cigarettes is choking in the room), you should alarm.
The smoke alarm is by monitoring the concentration of smoke to achieve fire prevention, such as internal Long Xin smoke alarm by ion type smoke sensor, it is a kind of advanced technology, stable and reliable operation of the sensor, is widely used in all kinds of fire alarm system, fire alarm performance is far superior to the gas resistance.
