There are different types of intercoms. The main ones are:
- negotiation;
- video intercom;
- audio video intercom.
The first type of intercoms 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 in order to decide whether to let the person into the entrance. The intercom type of intercoms is used most often in urban multi-storey buildings. Such devices do not require large expenditures for CCTV cameras. AV intercoms are much more expensive and therefore used much less frequently.
What are intercoms?
Among the various companies that produce control intercoms, the most famous are:
- "Visit";
- "Metacom";
- Cyfral;
- "Factorial".
Working principle
The most common types of intercoms are listed above. All of them work on the same principle: the residents of the house open the door with special keys. Each such device has its own unique key that unlocks it. Only after thatthe door can be opened. If a person who does not live in it tries to enter the house, then, accordingly, he does not have the necessary key and he must call the apartment to be let into the entrance. Without a doubt, this increases the control of people passing into the house and increases the safety of residents and their property many times over.
Is it true that intercoms are so reliable?
As you know, they can break from time to time. Often, even those who live in it cannot get into the house. Or vice versa, the intercom door can be constantly open, then absolutely strangers can enter the house. In such cases, a wizard is called who fixes all the problems. But such repairs require absolutely no special tools or extra keys.
All because the intercom is an ordinary device. And to fix it, you do not need any special tools or skills. To "repair" it, just enter special codes using the buttons. And that's it. Residents who know them can always open the door even without using a key.
This was invented by the developers themselves specifically to make it easier to unlock the device. As a result, if you learn a few special codes, they can be used for absolutely any device and even in any other locality. They allow not only to open the door, but also to completely change the programming mode.
Let's analyze the principle of keyless entry using the example of one of the devices.
Codeintercom opening
Intercom is one of the simplest devices for protecting a home from access by unauthorized persons, which is used by residents of high-rise buildings.
To simply open the door and enter the entrance, it is enough to know the universal cipher that will help you get inside.
The intercom code Cyfral ("Digital") may even be too simple if there are apartments in the house with numbers that are fully multiples of 100. That is, apartment numbers such as 100, 200, 300, and so on up to 900. In this case, the universal Cyfral intercom opening code is used: 7272 or 7273.
Procedure:
First, press the "Call" button.
Second - enter the apartment number with suitable numbers.
Third - enter the Cyfral intercom code 7272 or 7273.
Depending on the programming of the device, either the first or second password may be suitable.
If there are no apartments with suitable numbers in the entrance, then other combinations are used.
Ciphers
How to find out the Cyfral intercom code? To increase the security of the systems produced, the Cyfral intercom company began to create different types of devices. This decision significantly improved the work of the company. But that doesn't mean their programming is hard to bypass. It's just that different ciphers are now used for different Cyfral models.
Intercom Cyfral CCD 2094: codes
In recent years, the ciphers of this device have become a little more complicated. This is because new models now have additionalmicrocontrollers and special programming. Using passwords intended for other intercoms, and combinations with apartment numbers that are multiples of one hundred, will not help to deceive the device.
To bypass this model, proceed as follows.
Step 1. Type four zeros on the keyboard.
Step 2. Wait for "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 intercom codes. Only one combination of numbers will work for each device, and you can choose it by trying each of them. After the correct password is selected, the device will display notification F0. This is a kind of request for information that will give permission for access. In order to receive it, you need to enter the numbers 601.
Additional way
If the above steps did not help to find codes for the Cyfral CCD 2094 intercom, and it is not possible to use the bundled identifier (device key), try changing the programming and setting your password.
To do this, follow these steps. If the previous combinations are lit on the screen, press the reset button. Next, enter the code information K0K. After that, you need to dial a combination of any four numbers. If it turns out to be unique, then these entered characters will become the new password after repeating them. Now, to open the door, just enter this combination of numbers.
These actions will not damage the device in any way. But in the event of a real breakdown, the masters may have difficulty in reprogramming. But they will be able to follow the same pattern and set a new password.
Cyfral CCD intercom code 20
For this model, there are also various combinations that help hack the device. But they take longer to use and a bit more difficult to learn. Therefore, you can choose an easier way to open the door: set a new password.
The principle of reprogramming for intercom models Cyfral CCD 20 and CCD 2094 is almost the same. So what combinations to use?
First, enter the following characters: К0К1234. After a short pause, you must enter the number five. After a special beep, you can dial a new password - three or four digits.
If the entered combination is unique, then after it is redialed, 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.
