EES offers products in the field of switchgear monitoring and fault annunciating ranging from simple devices with predefined settings up to a networkable systems with IEC 61850 and IEC 60870-5-104 multilink structures. Setting into operation and adjusting to parameters on site, DIP switches and easy of use browser based software are provided. Hereby standardized reporting procedures acc. to DIN 19235 or ISA, as well as individual sequences can be realized. Drop flap functionality suits the demand for displaying last states of a facility. Supervision relays monitor voltagelevels, as well as phase failures in networks. Moreover EES multiplexer systems convince by universal applicability, simple handling and low installation costs. The systems are compact and have high interference resistance for transmission of digital and analog I/O’s up to 20 Kilometers over arbitrary control lines or wireless. For reliable transmission and evaluation of the data telegrams secured protocols are used.