The sensitivity of smoke detectors is divided into several levels

The sensitivity of different manufacturers, different brands and types of smoke detectors are not the same, the standard sensitivity smoke detector is divided into three stages:

Class I: <0.5dB/m;

Class II: >0.5dB/m, <1dB/m;

Class III: >1dB/m, <2dB/m

The smoke detector sensitivity is the highest level 1, level three the lowest sensitivity. Whether it is a level or three level sensitivity of smoke detectors, are in line with national standards. Common smoke detector consists of photoelectric smoke detector and ion type smoke detector, the sensitivity of the ion type smoke detector is higher than that of photoelectric smoke detector. General smoke detector in the factory, manufacturers will be its sensitivity standard on the product label or product description.

Smoke detector sensitivity is not the higher the better, the sensitivity of the user according to the specific place to install the proper choice of detector. For example, if used in the family, if the sensitivity of smoke detectors are too high, can cook a little careless may cause the detector alarm, this will bring some unnecessary trouble to daily life. While some weak room, usually unattended, once the fire had suffered heavy losses, then you need to install a high sensitivity of smoke detectors, ensure that the first time that the fire.