Electric shutter door in the purchase must pay attention to the improper choice will seriously affect your use, summed up the following points.

一、新标准对防盗安 全等级划分，将防盗安 全级别调整为“甲”、“乙”、“丙”、“丁”4级，甲为，依此递减。电动卷帘门的防破坏时间也是逐级递减的，低的丁级为少6分钟。

1、 According to the new standard, the security level of anti-theft is adjusted to four levels, namely "a", "B", "C" and "d", and the level of "a" is advanced, and then decreases. The anti damage time of the electric rolling shutter door is also decreasing step by step, and the lower level D is less than 6 minutes.

二、甲、乙、丙、丁级分别应达到2毫米、2毫米、1.8毫米和1.5毫米。钢板的厚度直接关系到电动卷帘门防盗安 全性能。好的钢质电动卷帘门骨架中有石棉等具有防火、保温、隔音功能等填充材料。

2、 Grade A, B, C and D should be 2mm, 2mm, 1.8mm and 1.5mm respectively. The thickness of steel plate is directly related to the security performance of electric rolling shutter door. Good steel electric rolling shutter door skeleton has asbestos and other filling materials with fire prevention, heat preservation, sound insulation functions.

三、电动卷帘门有自锁、防撬的功能。按新标准规定，电动卷帘门的锁具应能在防破坏时间内，即使钻掉锁芯、撬断锁体连接件从而拆卸锁具或通过上下间隙伸进撬扒工具，也无法打开门扇；门框与门扇间的锁闭点，按照防盗安 全级别甲、乙、丙、丁应分别不少于12个、10个、8个和6个；电动卷帘门主锁舌伸出有用长度应不小于16毫米，并应有电动卷帘门锁舌止动装置。

3、 The electric rolling shutter door has the function of self-locking and anti prying. According to the new standard, the lock of the electric rolling shutter door should be able to open the door leaf within the anti damage time, even if the lock cylinder is drilled out, the lock body connector is pried off to remove the lock, or the prizing tool is extended through the upper and lower clearance; The number of locking points between the door frame and the door leaf shall not be less than 12, 10, 8 and 6 respectively according to the security level a, B, C and D; The useful length of the main lock tongue of the electric rolling shutter door shall not be less than 16 mm, and there shall be a stop device for the lock tongue of the electric rolling shutter door.

四、新标准还增加了可以帮助消费者识别电动卷帘门真伪的内容，就是要求电动卷帘门应有固定标记。电动卷帘门标记共由3部分组成，标记符号为拼音字母，从左到右分别为防盗安 全门代号、防盗安 全级别和企业自定义特征。其中，防盗安 全级别标记固定在内侧铰链边上角距地面高度160厘米左右的位置上。

4、 The new standard also adds the content that can help consumers identify the authenticity of the electric roller shutter door, which requires that the electric roller shutter door should have a fixed mark. The mark of electric rolling shutter door is composed of three parts. The mark symbols are Pinyin letters. From left to right, they are anti-theft security door code, anti-theft security level and enterprise custom features. Among them, the anti-theft security level mark is fixed on the position about 160 cm above the ground at the upper corner of the inner hinge.