Does the law stipulate that the link of fire signal needs to be provided by the property?

First, according to your description, it should be an office building. Check the property documents signed at check-in, such as tenant manual, decoration manual, etc. There should be something in it, if not, it is evidence.

Second, find your Party A (lessor) and let Party A come forward to coordinate.

Third, the fire terminal equipment is connected to the fire main engine of the building, and the property also bears the fire responsibility of the terminal connected to the main engine. This depends on whether the service covered by the property fee has this.

Fourth, after the decoration, the fire department can be asked to solve it (send some gifts), and the general fire department holds the property.

Verb (abbreviation of verb) Generally speaking, property management companies should prohibit tenants from changing terminal equipment such as fire smoke and spray without permission when they move in. If you change it without permission, don't say it. If it doesn't happen when entering the site, it is Party A's breach of contract when handing over the house (the fire protection law has mandatory provisions).