Suppose the postman or courier brought you an envelope and you don&#;t want to open the door completely to keep yourself and your family safe. The presence of this lock on the door makes the door open as much as exchanging an envelope or a small package, and so to speak, it is locked at a low angle. Therefore, having this option on the door can give you more security. Especially when young children are alone at home, and to answer the person behind the door, it is advisable not to open the door completely.

از گذشته دور درب هایی که به عنوان ورودی منازل و ساختمان ها مورد است.فاده قرار می گرفتند به صورت تمام چوب، تمام فلز و ترکیبی از چوب و فلز بوده اند. درب های قدیمی دارای مدل های مختلف با برجسته کاری های ساده وجذاب بودند که نمونه هایی از آن در تصویر زیر قابل مشاهده است..

It is customary to use doorknob or door knocker for Iranian anti-theft doors. These knockers have various designs and colors, and its efficiency is to create beauty in the door, to knock on the door and inform the residents. Anti-theft door knockers should usually be set with handles to create the necessary harmony and beauty. This piece, like the fixed handle, has a great effect on the beauty of the anti-theft door. Types of anti-theft door knockers made of aluminum, iron, and lead are available in the Iranian market.

امروزه تولید انبوه چنین محصولاتی از نظر تامین منابع اولیه و قیمت تمام شده برای تولید کننده و مصرف کننده مقرون به صرفه نیست. البته باید به این نکته توجه داشت که درب ضد سرقت در مدل های کنونی از نظر قیمتی بسیار ارزانتر و از نظر امنیت بسیار امن تر از مدل های قدیمی هستند. با توجه به است.فاده از دستگاه های صنعتی در تولید محصول، تنوع رویه های محصول بیشتر از گذشته است. و خریدارن با سلیقه های مختلف، مدل های بسیار متنوعی برای انتخاب پیش رو دارند.

The multi-system lock is the famous multi-tab lock of anti-theft doors. This lock has a central system, and several moving tabs that enter the frame from the top, bottom, and side. In terms of security, the multi-system lock is the best type of lock available in the Iranian market. This lock is currently only available with the Turkish Kale brand. Of course, some manufacturers also use various Chinese brands. Because of the restrictions on its import, its use is not very common. The multi-system anti-theft lock has a lock cylinder (lock hub).