Is it safe for the old security door to automatically lock with a bang

What kind of security door are you installing? Do you want to add a fingerprint lock, a combination lock or an Anerfa mobile phone door lock? You've got to make it clear.

The quality of my anti-theft door is very good, and the master is also very meticulous in installing it.

Relatively safe, the security door is just like that, and professional people can open it. If the ventilation in the home is not smooth, it can be installed, if the doors and windows are well ventilated, it is not necessary.

There is certainly no overall security door security. Ventilation can be undertaken by windows, and the security door is the security door, the safer the better. I hope my answer can help you.

Are home combination locks really safe?