What if someone knocks at the door in the middle of the night and pretends to be a property?

Don't open the door, choose the alarm.

If a party who impersonates a property management company commits fraud or theft, it is an illegal and criminal act and should bear corresponding legal responsibilities. According to Article 49 of the Law on Public Security Administration Punishment, those who steal, cheat, rob, rob, extort or intentionally damage public or private property shall be detained for more than five days and less than ten days, and may also be fined less than 500 yuan; If the circumstances are serious, he shall be detained for more than 10 and less than 15, and may also be fined less than 1000 yuan.