The main feature of Roller shutter automatic side hung door is that there is no special requirement for the door body. As long as there are installation conditions, an ordinary side hung door can be turned into an Automatic door. The only requirement is that the heavy automatic side hung door opener should be equipped with high-strength hinges, because the opening torque has a great force on the hinges when the door opener is running. The automatic swing door can be divided into two types based on its working principle: fully electric and semi electric, each with its own characteristics. The scope of application varies.

但是，這種幾乎的自動卷簾門卻有三個缺點。從而限制了它的使用范圍。

However, this almost perfect automatic Roller shutter has three disadvantages. This limits its scope of use.

、由于是全電動，一且停電。門就變成了完全的自由門，因此不能用于防火門：

Firstly, due to being fully electric, there is a power outage. The door becomes a completely free door, therefore it cannot be used for fire doors:

第二，由于有自動反向功能。在風壓突然加大時，門就會將這種力量變化識別為開門信號并將門打開，所以，這種自動門不能用于外戶門：

Secondly, due to the automatic reverse function. When the wind pressure suddenly increases, the door will recognize this force change as the door opening signal and open the door. Therefore, this Automatic door cannot be used for external doors:

第三，重要的是，由于整個運行過程都是電動控制，因此在頻繁使用(如每天幾千甚 上萬人次)的條件下，控制電路和電機的負荷會很大。轉別是當門體運行中遇到障礙后，程序設計里有一種自動學習的功能，以確保門機在障礙被移開后再正常工作，但是在這個自動學習程序運行時，系統不能有任何信號輸入，這在頻繁使用(如每天幾千甚上萬人次)的條體下不易做到，因此這種自動門不能在頻繁使用的條件下使用。

Thirdly, it is important to note that due to the fact that the entire operation process is electrically controlled, the load on the control circuit and motor can be significant under conditions of frequent use (such as thousands or even tens of thousands of people per day). When the door body encounters an obstacle during operation, there is an automatic learning function in the program design to ensure that the door machine can work normally after the obstacle is removed. However, when the automatic learning program runs, the system cannot have any signal input, which is not easy to achieve under the condition of frequent use (such as thousands or even tens of thousands of people per day), so this Automatic door cannot be used under the condition of frequent use.

這種全電動自動卷簾門平開門如果傳動部件的加工精度高，就會達到靜音的效果，非常適用于像手術室這類對噪音水平要求很高的地方。由于這種門機的控制器是微處理器，所以同樣會有自動反向功能和多種其他可調節功能。除此之外，這種門機還有一個比較特殊的"推即開"功能，也就是當人用手推門時，推門的力量大到一定程度后，門就會自動打開，這樣就可以在不安裝雷達等信號裝置的條件下，使門自動化運行。

This kind of fully electric automatic Roller shutter swing door can achieve the effect of silence if the machining precision of the transmission parts is high. It is very suitable for places with high requirements for noise level such as operating rooms. Due to the fact that the controller of this door machine is a microprocessor, it also has automatic reverse function and various other adjustable functions. In addition, this type of door operator also has a special "push open" function, which means that when a person manually pushes the door, the force of pushing the door reaches a certain level, and the door will automatically open. This allows for automatic operation of the door without installing radar and other signal devices.

如果加上"零位控制器"，這種自動門可以達到雙向開啟，即如果人要從門外進入室內，自動門就向室內開啟，反之，則向室外開啟。在附加了各種如過熱保護等電氣性功能以后，這種自動門可以使用很長時間。在東北地區有一個醫院在八十年代安裝了一個德國制造的全電動自動平開門，直到十八年后的現在還可以正常使用。

If the "zero position controller" is added, the Automatic door can be opened in both directions, that is, if people want to enter the room from the outside, the Automatic door will open to the inside, otherwise, it will open to the outside. The Automatic door can be used for a long time after adding various electrical safety functions such as overheat protection. There is a hospital in the Northeast region that installed a fully electric automatic swing door made in Germany in the 1980s, and it can still be used normally 18 years later.