Security systems / | Intercoms |
What did not the market offers, in order to protect the home and make it an impregnable fortress for the intruders! Doors, supercomplex and heavy-duty locks, metal grilles for windows and an alarm system, security cameras (CCTV), and communication devices-all this is intended to make it difficult to penetrate, to minimize the effect of surprise. Of the " home " part of a home security system can be somewhat conventionally called device monitoring and communication with the visitor. They allow the owner of the house to see, hear, and let the visitor (or admit) it. Recently, these devices often called intercom or intercom stations.
Intercoms - is informing or warning part of the protection system. According to the principle of work are divided into audio systems and video intercoms. The choice of the intercom and equipment depends, as a rule, the configuration of the facility and the customer's needs.
Phone Entry System allows you to set incoming visitor only voice contact. Device consists of an outer and inner blocks interconnected by wires or radio link. The outdoor unit - a panel of challenge, which is mounted outside the front door or the door frame. The panel has a call button and intercom. Pressing the call button, the visitor gives the owner the room signal about your appearance. That part of the intercom, which is located inside the house, consists of an intercom (it is usually a tube connected to the machine as a conventional telephone wire, and radio channel), and a button that unlocks the electric lock on the front door. For security purposes, for example, in case of fire, the front door can be transferred to the state " open ", if it receives a signal from the inside release.
In private houses is recommended to install two sets of challenges: one at the entrance to the local area, and the other - directly from the front door of the cottage. Set the block call must be at a height of about 1.5 m.
CCTV, in contrast to the " ", audiorodstvennika allows the owner still and watch the space in front. Part of the video door located inside the house, has a special built-in mini-monitor. Outdoor unit intercom, except the intercom call and has a dedicated camera surveillance, which is connected to a monitor on the premises. From the visitor intercom it looks like a candy bar, which houses a video camera, a microphone, a speaker and a call button. For video phone can be connected and multiple cameras (including " hidden "), to view the door from several positions. Also, one camera can be connected to multiple video intercom, for example, to the organization of admission to the apartment block of flats. The visitor is bound to need his room, and there comes a signal unlocking the door.
Monoblocks audio and video intercom located outside the room, the experts call the outdoor panel. As the outdoor unit has to work all year, producers should consider the possibility of operating in a pretty harsh environment, in particular, a number of models can operate in temperatures ranging from -40 - -20 & deg; C to +50 - +60 & deg; C. The body panels can be either plastic or vandal-proof - or metal.
In recent years, developers intercoms have taken steps aimed at improving the comfort of using these devices. For example, some modern models of audio and video door phones are equipped with voice mail and visitor pressing the call to leave a message or contact with the mobile phone owner of the house or apartment.
available on the market and models that combine a conventional intercom telephone and TV. And if a guest has arrived when the owner is busy watching TV, the system automatically displays the images come. Some newer models are equipped with an infrared camera video intercoms and lighting that allows you to see the visitor in almost complete darkness.
There is also a model with a block of memory, which store up to several tens of images. The memory unit is connected to the indoor unit equipped with a monitor. Signal for image recording in the memory unit in the automatic mode is a visitor presses the call. When recording the image is recorded as the date and time of visit of the credits in the frame. If within fifteen minutes produced press again, the new record is not produced (assuming that it is the same visitor pressed the button a second time). When the memory overflows, the older image is erased. Lock function enables video intercom pictures of visitors to the owner upon return home quickly find out who visited him for the last time.
There are various configurations: one block cameras - two monitors, two sets of cameras - one monitor. And she and the other versions have their advantages. In the first case it is possible to arrange the screens in different rooms. The signal from the visitor arrives on both monitors at the same time, any of them can see the visitor, to talk with him and remotely open the lock. In addition, the indoor units can be used as an intercom, without entering the door unit.
The second option (with two surveillance cameras) is aimed at improving safety. In this case, another camera installed secretly and in a place that the visitor in any case could not go unnoticed or unrecognized.
Multifunction intercoms can even be combined with security and fire alarm and security and calling emergency services.
Before buying intercom, experts recommend to decide as to which functions should be performed is a device already on this basis, select the type - audio or video.
The next step is to compile a list of problems solved intercom, building from which you can make a rough " portrait " model. So, to equip a small single-family home can be quite a vyzovnoy panel and one indoor unit with monitor and voice tube.