The RACS 4 is a networked access control system based on single door access controllers, readers, communication interfaces, expanders, network controllers, and managing software.
System functionality depends on the type of equipment used in a particular installation. The RACS 4 can be divided into separate branches which are called access networks or subsystems. Up to 250 networks can be integrated into a single access control installation. Each network may have up to 32 access controllers connected to the RS485 communication bus and with a distance of up to 1200m. The PR Master software communicates with the individual network through a separate serial communication port (COM or USB) or through a computer network (WAN or LAN). The RACS 4 is dedicated to small or middle-size access installations and is capable to handle up to 1000 controllers and depending on the PR series up to 4000 users (PRxx2) or 1000 users (PRxx1).
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