In recent years, fire-fighting units have actively promoted the installation of residential fire alarms at home to detect fires and evacuate people in time.
Commercially available residential fire alarms are generally classified into ❶ smoke detector type and ❷ heat sensitive type.
❶ smoke detector type:
👉 sense the smoke particles generated by the fire and sound the alarm.
👉 usually installed in the bedroom, living room or stairwell.
👉 can be divided into photoelectric and ionic, the former principle of operation is that the internal light source is refracted by the smoke particles, converted into an electronic signal, and triggers an alarm; the ionic type forms a current in a pair of electrodes, when the smoke particles enter, then the current is reduced, and when the amount of reduction reaches a certain value, it will trigger an alarm!
❷ heat sensitive type:
👉 When the temperature in the detection area rises to a certain temperature, a fire alarm is issued.
👉 It is especially suitable for the kitchen (The kitchen usually produces smoke particles, so it is not suitable for smoke detector type.).
Where to buy the residential fire alarm? Available in hypermarkets, fire safety equipment stores or online stores, BUT! Special attention should be paid to whether the product has been individually marked for approval by the National Fire Agency, Ministry of the Interior. It is guaranteed to purchase qualified products!