Smoke Alarms859 offers*
Since the sense of smell is not active during sleep, sleeping persons usually do not detect smoke or detect it too late. The solution is therefore smoke detectors that sound an alarm when smoke develops, which can be vital, especially in bedrooms.
The inhalation of smoke gases can cause serious damage to health. They essentially consist of three major groups:
Irritant gases (hydrogen chloride and sulfur dioxide): they have a corrosive effect on mucous membranes and respiratory tract.
Toxic gases (carbon monoxide and carbon dioxide): They prevent oxygen transport and cause suffocation.
Soot particles: Cause burns to the lungs and mucous membranes.
Smoke detectors therefore function in a similar way to an early warning system, because the protection provided by the smoke detector kicks in as soon as a fire breaks out in your living space. Even a small amount of smoke, such as from a tipped-over candle, is enough to trigger the alarm signal. The alarm of the smoke detector therefore informs all persons about the fire who can hear the acoustic signal in the vicinity.
In order to be able to emit an alarm sound, the smoke alarm device requires a transmitter and a receiver. The transmitter is a diode (infrared diode) that sends light to the receiver (photodiode). The infrared diode sends light signals at regular intervals. However, as long as there is no actual fire, the photodiode does not receive this signal due to its position. This is because the light signals require a reflector - in the case of a fire, these are the smoke particles - in order to be able to transmit the light signal to the receiver. Only when there is a reflection of the light can the receiver pass it on to a processor, which evaluates the signal and triggers the alarm.
When installing the smoke detector, it is not only the technical installation that is important, but also the selection of a suitable location. Basically, it is important that you install the detector on the ceiling as centrally as possible. The distance to lamps, ceiling fans or other attachments on the ceiling should be at least 50 centimetres. If the room is sloping, you should install the smoke detector on a horizontal surface if possible. If the walls in a room are all pointed, you may have to mount a small plate to bring the smoke alarm into a horizontal position.
Tip: Some manufacturers offer the installation of smoke alarms by means of an adhesive pad or magnetic pad, so that you do not have to deal with dirt, tools and drilling work.
The legal smoke detector obligation applies to private living spaces and is interpreted differently in different federal states. The law on mandatory smoke alarms in all federal states has in common that the application standard "DIN 14676" must be observed. It states that in private dwellings bedrooms, children's rooms and corridors that serve as escape routes must each have at least one smoke detector. It also includes correct installation so that the smoke alarm actually detects and reports smoke at an early stage. Distinctions in smoke detector requirements often only relate to the need for retrofitting in new, converted or existing buildings.
What many people don't know is that another smoke alarm should be fitted if the room is larger than 60 square metres. Also, if you divide your living room by partitions or furniture, for example, you should install at least one smoke detector in each room.
You should also ensure that the spreading smoke can reach the smoke alarm by not installing the smoke alarm in an area where there is a risk of draughts. So don't mount the smoke alarm near air conditioning units or ventilation outlets to prevent smoke from entering the detector.
I don't advise you to install additional smoke alarms in the bathroom and kitchen, as the risk of false alarms is very high here. However, if you do not want to do without protection in these rooms, there are alternative models such as heat detectors.
The installation of detectors is obligatory in private bedrooms and children's rooms as well as in corridors that serve as escape routes. In addition, you should not do without a smoke detector in a room with a wood-burning stove, despite the risk of a false alarm, because most wood-burning stoves are now built in such a way that, if used correctly, hardly any smoke is produced anyway. In such a room, a heat detector can also be useful as an alternative.
In most federal states, however, it is the landlord who is responsible for the maintenance and servicing of smoke detectors. In the event of a fire, the landlord is also usually liable if the smoke alarm fails or is not present due to lack of maintenance. However, landlords in various federal states have the option of expressly rejecting this responsibility in the tenancy agreement and, for example, transferring the battery change and function test to the tenant by means of an additional clause. In this case, the landlord should nevertheless check the professional execution of this maintenance work in his own interest.
If you, as the tenant, do not comply with your obligations regarding the maintenance and servicing of smoke detectors, you may be liable for any damage caused by a non-functioning or non-existent smoke detector.
Most smoke detectors have a small button that you press down with a pen, tweezers or a bent paper clip. You may need to press the button for several seconds.
Smart smoke detectors that work with radio (wireless smoke detectors) can also be deactivated or reset via an app on your smartphone.
If the above measures do not help, remove the smoke alarm from the ceiling and remove the battery. Put it back in again afterwards. The false alarm should now no longer start.
If the smoke alarm continues to sound, the battery is probably dead. Simply install a new battery.
If that doesn't help either, the smoke alarm is probably defective and you should replace it with a working device.
up to ten years
are not suitable for all smoke detectors
Standard life of one to two years
are considered the classic form of battery
guaranteed to last ten years
Popular with private individuals and businesses
Costs for a smoke alarm with a permanently integrated battery are somewhat higher
If you have purchased a smoke detector, it is best to keep track of the date of first use to prevent possible battery failure.
If you are responsible for the correct maintenance and testing of the smoke detector yourself, it is best to refer to the product's operating instructions. According to the smoke detector obligation, at least one annual function test in the form of a visual and alarm test is mandatory. With most smoke detectors, a simple press of the test button is sufficient for the alarm test. If an alarm sounds, your smoke detector is in working order. Otherwise, you must replace or repair the product.
According to the DIN standard, the visual inspection also includes checking whether all smoke inlet openings are free and whether the device is damaged from the outside. Checking whether the installation location is correct is also part of the visual inspection. Dirt or damage can be indicated by some high-quality devices apart from the alarm and visual inspection with a fault indication.
In rented flats, on the other hand, the landlord or an appointed company is responsible for the maintenance of the smoke detectors, unless there are other agreements in the rental contract.