A comprehensive access control system network diagram for a 6-floor residential and commercial building complex in Riga. The drawing illustrates the hierarchical connection topology between multiple controllers positioned throughout the basement, ground floor, and floors 2-5. Key components include primary controllers (PK1, PK2) and door control nodes (KNK1-KNK4) interconnected via a structured cabling system. The network layout demonstrates vertical distribution across floors with specified connection pathways. Designed for the 3rd phase of a larger development project at Ulbrokas Street, this security implementation follows Latvian building standards with bilingual labeling (Latvian/English) throughout. Notable features include the clear demarcation of electrical distribution points and specialized telecommunications pathways dedicated to the access control infrastructure.