The front door is the “border” between the street and private property, which not everyone is allowed to cross.
The door protects the room from external influences – prying eyes, uninvited guests, intruders and weather conditions. Therefore, it must be durable, high-quality, and attractive. Equally important is the door lock, it is he who makes the front door inaccessible to strangers.
Interesting fact: The most unusual door is the Tanaka door, which consists of vertical slats. They have built-in sensors. When a person approaches the door, sensors determine the contours of the body and the bars move away.
The door lock is divided into 3 categories:
- a mechanical, traditional lock that opens and closes with a key; - electromagnetic, in which instead of a key there is a card or a key-tablet, the door is held in the “Closed” position using a powerful magnet that exerts an attractive force; - electromechanical, when the lock has both a regular key and a card.
Doors to entrances, industrial buildings, hypermarkets are equipped with electromagnetic locks. A powerful electromagnet does not allow you to open the door with ordinary force, the breaking force reaches 500-1700lbs. Opening occurs thanks to electronic cards, keys, which must be attached to the reader from the outside of the door.
Entry doors with an electromechanical lock are the most reliable, since the design combines an electronic card (key) and a mechanical lock (cylinder, lever). Ensuring reliability is manifested as a result of the fact that the locking bolt is also controlled by an electric drive. The lever lock cannot be opened with a master key, the levers are complex-shaped plates, the larger they are, the less chances of intruders entering the apartment. Cylinder locks also determine secrecy; it is very difficult to crack the door with a master key. All of the above options are convenient and have a high degree of reliability. But the most modern option to isolate yourself from the outside world and protect your home from intruders is to install a “smart lock”. Such a mechanism is triggered only by scanning the retina, by fingerprint or entering a password and the operation of the key. The principle of operation of digital smartlocks is as follows – you need to dial a special code on the panel and attach the key, if everything is done correctly, the door will open. In the event of a power outage, an autonomous power supply is activated, that is, a battery that can last for 48 hours.
It is rational to use a scanner to scan the retina, a fingerprint reader or install a chip key. Despite the high reliability, the “smart lock” has drawbacks – such a pleasure costs between $ 500-3000, and an apartment with a scanner will also attract curious people, thieves and vandals.
To protect your home, it is best to use a mechanical lock in combination with an electronic card. Such a system will cost less and provide high security.