The ENYA series powered by TELE are composed of coupling units. It ia available in two types, the E1K and the E3K. The E1K units function as coupling relays that has one change over contact. it has a witdth of 17.5 millimeters. It is included with yellow LED that serves as an indicator for relay output. It has an installation design and operates with a temperature range of -25 to +55°C.