Is there a doorbell that doesn t need to be attached to the security door?

There are many ways to change the doorbell and the battery, I don't know which one you are. >>>More

Of course there is, this kind of lock is the most used now, smart locks are everywhere now, you should choose brand smart locks when you buy them, such as Qunxiong smart locks, the best smart anti-theft locks in the country.

There are several kinds of smart door locks for anti-theft doors: intelligent linkage alarm locks, intelligent magnetic card electric locks, and smart password electric locks.

The front and back of the door leaf rigid plate of Huajue Grade A and Grade B anti-theft doors are made of 1mm Shanghai Baosteel high-quality cold-rolled steel plate, and the door frame is made of Shanghai Baosteel 2mm high-quality cold-rolled steel plate. The difference between Class A and Class B is that there are three vertical and six horizontal reinforced keels inside the Class A anti-theft door leaf. Huajue anti-theft doors mainly produce Class A, Class B, and a small number of Class D anti-theft doors, the dark horse of the anti-theft door industry, without locks.

The electronic doorbell on the security door is generally battery-powered, and according to the different design of the security door, the No. 5 or No. 7 dry battery is generally used.