For car owners living in the private sector, a private car is almost always close by. Therefore, they have less reason to worry about the safety of their movable property. Drivers who live in apartments usually put cars in garages that are far enough away from home. In this case, the GSM alarm system for the garage will help improve security with your own hands.

Spending a couple of evenings on the assembly of this scheme, you can get a good electronic guard. An absolute guarantee is unlikely to provide any device or system, but in this case there will be the fastest possible response to unauthorized entry. The total cost of assembly will be affordable for any driver, all the more interchangeable for possible repair.

Content

• 1 The principle of the GSM-alarm
• 2 Homemade alarm layout
• 3 Assembling the working scheme
• 4 Pros and cons of construction
• 5 What to choose: store or homemade alarms?

The principle of the GSM-alarm

A working, electricity-connected unit is installed in the garage, but it can be independent of electrical power due to the built-in battery. When intruders enter the premises contact closure occurs and the call is made на запрограммированный phone.

As an additional element of security, you can set the sound and light alarms, which will also start during the hacking. When a door or gate opens, followed by a bell, the stranger should not see the unit where the garage alarm is located. Therefore, it is recommended to hide the working scheme.

Homemade alarm layout

Основным поводом для изготовления самодельной сигнализации является относительная ее дешевизна. Наиболее дорогой частью конструкции является старенький кнопочный (обязательно!) phone с рабочей SIM-картой. Можно использовать свой старый phone или же поискать на рынках бу модель за символическую плату, главное, чтобы он был в рабочем состоянии.

So that the alarm system in the garage with your own hands was made quickly, you will need to assemble such a list:

1. Push button phone GSM standard. Touch models for the simple version will not work.
2. Managed Sealed Contact Hercon three- or two-pin.
3. Magnet.
4. Tumbler to turn on / off.
5. Copper Insulated Coil wire.
6. Soldering iron, preferably pulsed with a small capacity and a set of solders.

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Assembly of the working scheme

Before you collect an electronic circuit homemade alarm for the garage, you must correctly configure the phone call. Most models have among their functions "one-button call". This will be the most suitable option for configuring the scheme. On one of the “numbers” we put a “quick call” of our own second number, which receives a signal. Next, you need to open the case of the device to gain access to the electronic board.

There are phone models that do not have this feature. Also, the design of the mobile phone is characterized by the presence of on / off call with a single key. Under each of the options we give the corresponding schematic drawing.

Most of the “factory” alarms are arranged according to the same algorithm of operation. The only difference is that the cellular module is hidden in a sealed enclosure. In fact, such an alarm for a garage without electricity can also work autonomously for a long time, due to the discharge of the phone's battery.

During the installation of the selected scheme on the gate or the door of the room, we adjust the contacts of the reed switch so that when it is close to the magnet, the electrical circuit is in the open position. Accordingly, during the removal of these elements there is a closure of contacts, and the phone rings the owner.

You need to know that the security system should be as hidden from prying eyes as possible. This will give the opportunity to quickly send a signal of danger.

The circuit must also be protected from moisture ingress into it. Oxidized contacts may not work at the right time.

It is necessary to install the alarm system and remove the entire system with the help of a hidden toggle switch. For security, it must be hidden from prying eyes.

The garage owner should be aware that such an alarm sending scheme has a short delay of a few seconds. This time is spent by the mobile phone for dialing, so the block of homemade alarm should not be found and turned off during this time.

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Дополнительно можно в схему включить еще один звонок на phone сторожа охранного кооператива или его центральный пульт.

Advantages and disadvantages of the design

The main advantages of this scheme are the following parameters:

• simplicity and speed of assembly, even for beginners;
• availability accessories;
• minimum cost complete systems;
• opportunity battery life;
• sufficient efficiency.

It is also worth noting the availability and speed of obtaining information anywhere in the world.

The disadvantages include the following items:

• in the scheme the alarm system is installed, installed on one point, gate or door, without taking into account the window;
• those who are familiar with the device or the presence of this element of safety, may know how to disable;
• in very cold weather there is a risk of non-contacting.

Such obstacles can be eliminated by improving the design.

What to choose: store or homemade alarm?

When choosing, it is necessary to be guided by the value of the protected property and the quality of the rest of the protection, including the bars on the windows, durable gates, reliable roof. A self-made GSM-alarm for the garage will not be enough to completely cover it. But complete with other options of protection, it will justify itself.

In the purchased, more expensive versions of security systems, not always sought-after functions may be included, for which the buyer will overpay. At the same time, even they will not give an absolute guarantee of security. The final decision on the installation of any scheme remains with the owner of the garage.