Introduction

EIB is a control system for related applications in homes and buildings. The EIB system offers standardized basic and system components, e.g., Bus Coupling Units (BCU), Power Supply Units (PSU), Bus Interface Modules (BIM), Routers, and RS-232 data interfaces.

EIB offers the capability of constructing devices in a modular form using system devices like BCU or BIM that support communications-specific functions. A standardized interface called Physical External Interface (PEI) reduces the expense of developing EIB devices and allows them to be exchanged.

The EIB system is based on the specification of EIBA. It is available to anyone and contains additional information that is the basis for EIB product certification (EIB mark).

Twisted pair (TP) and other media may be used in an EIB system implementation. This specification describes for information only a possible implementation of a twisted pair medium to support the global understanding of the EIB system. The use of this medium is not mandatory.