Smoke alarm selection guide

Smoke alarm, also called fire smoke alarm, smoke sensor, smoke sensor, etc. Powered by the bus, there can be multiple connections on the bus, which are connected to the fire alarm controller and communicated to form an alarm system. There is no sound at the scene when the alarm is issued, and the host has sound and light prompts. This type of smoke alarm device is generally called smoke detection Device. Smoke detectors have address codes and those without address codes.

Ionic smoke alarms are more sensitive to tiny smoke particles, and respond to various smoke energies in a balanced manner; while forward-facing photoelectric smoke alarms are more sensitive to larger smoke particles, and have poor response to gray smoke and black smoke. some. When a raging fire occurs, there will be more tiny particles of smoke in the air, and when it is smoldering, there will be more smoke particles that are slightly larger in the air. If a large number of tiny particles of smoke are produced after a fire, the ion smoke alarm will alarm before the photoelectric smoke alarm. The time interval between these two types of smoke alarms is small, but this type of fire spreads very quickly. It is better to install an ionizing smoke alarm in such places. After another type of smoldering fire occurs, a large number of slightly larger smoke particles are produced. The photoelectric smoke alarm will alarm before the ion smoke alarm. It is recommended to install a photoelectric smoke alarm in such places. If you want to combine the strengths of both, you can install both types of smoke alarms wherever a smoke alarm is required.

Shopping guide

Because the ion smoke alarm is more sensitive to small particles, it will react faster when cooking. If you have encountered this type of problem, you have the following options:

(1) Install the smoke alarm far away from the cooking place, then the smoke particles will be much weaker when they reach the alarm. If you choose this method, you should figure out the direction of air flow. Otherwise, there will be no effect.

(2) Install a photoelectric smoke alarm. When a fire produces smaller particles, you may lose the opportunity to call the police earlier, but you also save the trouble of multiple smoke alarm failures.

(3) Install an ion/photoelectric combined smoke alarm. If the two sensors are combined, the sensitivity of the ion sensor can be set to be smaller, so that the device will reduce false alarms, and at the same time, you can also have a system for both the fast-spreading raging fire and the slower-spreading smoldering fire. Smoke alarm with greater sensitivity.

(4) Install an ion smoke alarm with mute function. In this way, you can reduce the sensitivity of the alarm for 15 minutes to avoid harsh alarm sounds when smoking or cooking.