What do you know about smoke alarms?

Smoke alarm is actually another name for smoke or smoke alarm. This smoke detector is the first to obtain the latest household detector standard 3C certification, and it is a recommended product for fire brigades around the world. It is easy to install and has remarkable effects, and has been widely used in important fire prevention places such as homes, factories, office buildings, hospitals, schools, and museums.

principle
There are radioactive substances in the sensor of the ion alarm that can generate an electric current. When the smoke particles in the smoke enter the sensor, the current will be disrupted, which will cause the alarm to sound an alarm. The photoelectric alarm will send out infrared beams. When there are smoke particles in the room, the beams will scatter to the sensor, and the sensor will send out an alarm sound after sensing a certain beam.

parameter
1. Power supply: 9V alkaline battery or carbon battery.
2. Working current: The static current is less than 10UA, and the working current is between 20-25UA.
3. Smoke sensitivity: in line with UL's No. 217 standard.
4. Working temperature: 40oF-120oF (-4℃-50℃).
5. Gas interface temperature: 10%-90%.
6. Buzzer sound level: 85 decibels at 10 feet.
7. Battery life: about 1 year.