There are different types of intercoms. The main ones are:
- negotiation room;
- video intercom;
- audio and video intercom.
The first type of on-door speakerphones makes it possible to simply talk with visitors in order to recognize them. The second allows the residents of the house to see who is standing at the door to decide whether to let a person into the entrance. The negotiation type of intercoms is most often used in urban multi-storey buildings. Such devices do not require large expenditures on surveillance cameras. Audio and video intercoms are much more expensive and therefore are used much less often.
What are the intercoms?
Among the various companies that produce control intercoms, the most famous are:
- "Visit";
- "Metacom";
- Cyfral;
- "Factorial".
Principle of operation
The most common types of intercoms are listed above. They all work on the same principle: residents of the house open the door with special keys. Each such device has its own unique key, which unlocks it. Only then can the door be opened. If a person who does not live in it is trying to get into the house, then, accordingly, he does not have the necessary key and he must call the apartment to be allowed into the staircase. Without a doubt, this increases the control of people passing into the house and many times increases the safety of residents and their property.
Is it true that intercoms are so reliable?
As you know, they can break periodically. Often, even those who live in it cannot get into the house. Or vice versa, the door intercom door can be constantly open, then absolutely strangers can get into the house. In such cases, they call a wizard that fixes all the problems. But such a repair does not require absolutely any special tools or additional keys.
That's because the intercom is an ordinary device. And to fix it, you don’t need any special devices or skills. To “repair” it, it is enough to enter special codes using the buttons. And that’s all. Residents who know them can always open the door even without using a key.
This was invented by the developers themselves specifically in order to facilitate the unlocking of the device. As a result, if you learn a few special codes, they can be used absolutely for any device and even in any other locality. They allow not only to open the door, but also completely change the programming mode.
Let us examine the principle of keyless access using the example of one of the devices.
Doorphone Opening Code
The intercom is one of the simplest devices to protect your home from unauthorized persons access, which is used by residents of high-rise buildings.
To simply open the door and enter the staircase, it is enough to know the universal code, which will help to get inside.
The Cyfral doorphone code (“Digital”) may even be too simple if the house contains apartments with numbers that are completely multiples of the number 100. That is, such apartment numbers as 100, 200, 300 and so on up to 900. In this case, the universal Cyfral doorphone opening code: 7272 or 7273.
Procedure:
The first is to press the "Call" button.
The second is to enter the apartment number with the appropriate numbers.
The third is to enter the code of the Cyfral 7272 or 7273 on-door speakerphone.
Depending on the programming of the device, either the first or second password may be suitable.
If there are no apartments with suitable rooms in the entrance, then other combinations are used.
Ciphers
How to find out Cyfral doorphone code? To increase the security of manufactured systems, Cyfral doorphone company began to create different types of devices. This decision significantly improved the work of the company. But this does not mean that their programming is difficult to circumvent. It's just that different ciphers are now used for different Cyfral models.
On-door speakerphone Cyfral CCD 2094: codes
In recent years, the ciphers of this device have become a bit more complicated. That's because the new models now have additional microcontrollers and special programming. Using passwords intended for other intercoms, and combinations with apartment numbers that are multiples of a hundred, will not help to deceive the device.
In order to circumvent this model, it is necessary to proceed as follows.
Step 1. On the keyboard, type four zeros.
Step 2. Wait for the inscription "ON" and press the number two.
Step 3. Dial one of the following combinations - 123400, 123456 or 456999. These are the most common Cyfral 2094 doorphone codes. Only one combination of numbers is suitable for each device, and you can pick it up by trying each of them.
After the correct password is selected, the F0 notification will appear on the device display. This is a kind of request for information that will give permission for access. In order to get it, you need to enter the numbers 601.
Additional way
If the above steps did not help to pick up codes for the Cyfral CCD 2094 on-door speakerphone, and there is no way to use the complete identifier (key from the device), try changing the programming and setting your password.
To do this, perform the following steps. If the previous combinations light up on the screen, press the reset button. Next, enter the code information K0K. After that, you need to dial a combination of any four digits. If it turns out to be unique, then these entered characters will become the new password after they are repeated. Now, to open the door, just enter this combination of numbers.
These actions will not harm the device in any way. But in the event of a real breakdown, the masters may have difficulty reprogramming. But they will be able to follow the same pattern and set a new password.
Doorphone Code Cyfral CCD 20
For this model, there are also various combinations that help to crack the device. But their use takes more time, and learning them is a little more difficult. Therefore, you can choose an easier way to open the door: set a new password.
The principle of reprogramming with the Cyfral CCD 20 and CCD 2094 doorphone models is almost the same. So which combinations to use?
To begin, we introduce the following symbols: K0K1234. After a short pause, you must enter the number five. After a special sound signal, you can dial a new password - three or four digits.
If the entered combination is unique, then after redialing these numbers will become the new password for the intercom.
Now you can enter the house without a key: when you enter this code information, the door will automatically open.