Install alarm system


Install alarm system: detector

Anyone who works hard for their money and sets up their own little empire according to their personal wishes does not want any burglar coming along, destroying or taking anything away. Burglary protection therefore has a high priority for many.

Stable entrance doors and security locks are already standard in many households, but there are many tools that allow even such locks "crack" within seconds. Even windows pose a special risk because glass is not unbreakable. No matter how safe all locks, doors and latches are, a larger stone is enough and a window provides an easy entry point.

Burglaries can hardly be prevented, however, alarm systems make it possible to deter burglars and to make the environment aware of the burglary. The technology required for perfect burglar protection is becoming ever cheaper, so that everyone can improve their own home security.

Alarm systems - prices and equipment

Who does not know them, the old motion detectors with remote control, which were sold as alarm systems several years ago in various electronic catalogs. Most needed batteries that lasted barely more than a month and had two switching modes - On / Off. For the first deterrent the technology was not wrong, but as soon as one was no longer in hearing range, this alarm technology was hardly to be used.

Alarm systems in cars or even on motorcycles make sure that loud sirens can be heard every day, and hardly anyone reacts to them. Enough time for the burglar to enter the allegedly monitored room and remove the batteries from the motion detector. Afterwards, the break-in can be carried out calmly. These motion detectors achieved a short deterrent and nothing more.

Today, there are single-board computers that can handle complex tasks. Barely larger than a pack of cigarettes, sensors can be monitored, calls made and movement sequences controlled. Such little arithmetic experts are easy to get for 40 €. The task of converting small computer technology into alarm systems is just a matter of ideas, implementation and programming. Many manufacturers have taken on the task of developing affordable alarm systems.

Install alarm system: system

Already cheap offers contain a solid basic package.

If many manufacturers deal with a technology and computer technology is becoming ever easier to use, the consumer has a huge advantage. Alarm systems are not only smaller, easier to use and easily expandable, they are one thing - cheaper.

Today, anyone can afford an alarm system and even very cheap do not have to be bad. Almost all rely on wireless data transmission, are extensible with an infinite number of sensors and installed quickly. Already for 150 € are basic equipment available on Amazon and other online stores. A comparison of different models can be seen here: Vergleich.org. We too have already looked at two alarm systems and tested them:

  • Egardia SmartHome entry-level package
  • Lupusec - XT1 Starter Pack

The test of the two alarm systems from different price segments proved above all that security is not a question of money. Both fulfilled their task safely, expanded and supervised the desired area. Differences were mainly in the equipment, the operation and the comfort to find. So if you invest in a cheap alarm system, you do not have to worry about being less protected. In many cases, only more time has to be put into the installation and setup and lived with a not so comfortable operation.

Alarm systems can do more than just alarm

"Am I already in it?" Yes sure! Everything that has a power plug today, must somehow be integrated into the domestic network. We read the battery level of our cordless screwdriver on the smartphone and operate the coffee machine from the desk. About the sense and nonsense can certainly argue. Not so with modern alarm systems.

Install alarm system: detector

Alarm system with network connection.

Imagine that you are already lying in bed and have forgotten to activate the alarm system of the workshop. Get in the clothes, out to the workshop, activate the alarm system, back in the house and out of the clothes. Five minutes later, a careless bird flutters against the window and activates the glass breakage sensor. Into the clothes, out to the workshop... No! One reaches for the smartphone or tablet, controls which sensor was triggered, looks out of the window for control or activates the camera for room surveillance. If there is a false alarm, it will be deleted and the system will be reactivated. It works so well that you do not have to be home for it.

Many alarm systems have one Network Connectionso they can be served from anywhere. Be it for activation, control or even remote maintenance by the manufacturer. Nothing is impossible and many things make perfect sense. You do not need to be an expert to operate. Corresponding programs are usually very user-friendly. Finally, the manufacturer wants to avoid application errors that trigger false alarms and leave a bad impression on the user.

Interesting is the integration of the alarm system into the network, if it is able to make phone calls and emails or send messages. That's how you get thanks to one GSM alarm system always informed even when absent, can even alert several people and notify the police in the event of a burglary.

Security systems and SmartHome

Modern alarm systems connect to the domestic network, wirelessly call the status of sensors and can be conveniently operated with a smartphone or tablet. What is nearer, so to use these functions to switch light switches and sockets or to control the heating.

Install alarm system: system

Control the alarm system, light and heating via app.

Many alarm systems therefore internalize the possibilities to make the home electronics smarter. Although many alarm systems can be extended by several modules, such as heating thermostats or radio-controlled sockets, one should never forget that this is primarily an alarm system. The SmartHome feature is an option and is usually only implemented as such. A real SmartHome controller can not be replaced by an alarm system.

Nevertheless, this option is worth considering. If you do not think too big and do not expect too much, the optional accessories of such an alarm system can be used quite sensibly. If, for example, she monitors the workshop, she can be turned off the living room at the end of the day, turn off the heating, switch off the lights or disconnect machines from the mains and finally activate the alarm system. Likewise, the evening activation of the alarm system can simultaneously turn on the light of the front door. In these applications, buyers should pay attention to the optionally available accessories. However, if you rely on intensive networking of your household, you should get a SmartHome system, which can be extended with an alarm system.

The right accessory for security systems

An important selection criterion of the new alarm system should always be the available accessories. The number of possible sensors is often infinitely designed so large that the limit is rarely reached. It therefore makes sense not only to look at the price of the basic equipment, but above all to compare the extensions. Even if the entire premium equipment is not used at the same time, it should be assumed that the system will be constantly expanded and expanded. If, for example, an additional smoke detector costs just € 5 less from a manufacturer and 10 units are needed for the entire house, then it can even be saved if the alarm costs € 40 more.

Which accessory makes sense and what it is suitable for, should clarify our overview.

Smoke detector - an option with must

Today, smoke detectors are mandatory in almost all federal states and buildings, resulting in a significant increase in the safety of belongings and their own health. The background is undisputed, but choosing the right smoke detector is often difficult. In addition to various qualities and battery equipment, smoke detectors can basically be divided into two groups:

Install alarm system: detector

Smoke detector for the alarm system

  • networked smoke detectors
  • non-networked smoke detectors

"Networked" here does not stand for the connection with the domestic network, but for the forwarding of the danger signal from smoke detector to smoke detector. If, for example, the smoke detector in the attic signals smoke, it can hardly be heard in the basement during home improvement. It may be too late before the fire is noticed. Networked smoke detectors, on the other hand, pass on their signal to the next smoke detector, which also signals the fire acoustically. The alarm signal from the smoke detector in the loft would be carried to the smoke detector in the hallway and down to the basement. This is then even at home do not miss.

Smoke detectors as sensors for a radio alarm system go one step further. In the event of danger, they notify the control center, which loudly announces the fire message, forwards it to the smartphone app or even announces the smoke development with a GSM function by phone call. A smoke alarm can hardly be implemented in an optimal way and anyone considering the purchase of an alarm system should also consider the extension of smoke detectors.

Motion detector with different technology

Infrared motion detector

Infrared motion detectors work, as the name implies, with infrared waves. When a person enters the room, the detector detects the "intruder" through the body heat and triggers an alarm. Slow temperature changes are automatically compensated by the detector and do not trigger an alarm. Care should be taken when planning that there are no immediate sources of heat in the surveillance area, such as lamps or stoves.

Install alarm system: alarm

Ultrasonic motion detector.

Motion detectors register movements

These detectors emit a high frequency, which can not be perceived by the human ear. The ultrasonic waves are reflected by objects and sent back to the detector. If a person moves through the room, this changes the frequency of the ultrasound waves emitted by the detector and this triggers the alarm. The principle of this detector is based on the so-called Doppler effect.

Dual motion detector

Here the principle of the two upper detectors is combined. There are different variants in which, for example, two infrared sensors are combined in one detector. In some models, however, there is also an infrared and an ultrasonic detector, which can trigger an alarm depending on. These detectors significantly reduce the risk of a false alarm, but also entail higher acquisition costs.

light barriers

This monitoring system uses infrared rays which are sent from a transmitter to a receiver. The path of the infrared rays can additionally be influenced by mirrors to monitor the desired area. If the beam is interrupted, the detector triggers the alarm.

Glass break detectors

Install alarm system: detector

Acoustic glass breakage detectors.

Acoustic glass break detectors have a built-in microphone and respond to characteristic frequencies. The frequencies are low (impact of the disc) and high frequencies (broken glass). In addition, the glass breakage detector works with the evaluation of infrasonic waves, which provide information about pressure changes in the room. The surveillance area extends over a radius of 7 - 10 m around the detector.

Passive glass breakage detectors

This type of detector is glued directly to the disk to be monitored and works with a piezoelectric sensor. The sensor responds to a frequency around 100 kHz, which corresponds to a typical broken glass vibration. The monitoring radius is about 1 - 2 m.

Active glass breakage detectors

Active detectors consist of a sender and one or more receivers. The transmitter sends a characteristic signal via the medium glass to the receiver. If the glass pane is damaged, there is no transmission path and the detector trips. An active glass breakage detector relies on a supply voltage.

Contact detector - window alarm and door alarm

Install alarm system: alarm

Magnetic Contact detector.

For windows and doors magnetic contact detectors are often used to check them for opening and tilting. The detectors are based on reed contacts in combination with permanent magnets. If the magnet is in the vicinity, the reed contact closes and a monitoring current flows. If you remove the magnet, the reed contact opens and interrupts the circuit. To protect against sabotage by external magnets, there are now several protections.

Bolt contact

The strike plate contact is used in bolt locks and is often the closure indicator and control. Main component is a micro-switch, which is operated by a lever. This signalizes the idle state or a danger message.

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