Input/output extension for the easyE4 series control relays with a rated operating voltage of 24 VDC. This extension provides: 4 analog inputs that can be used either as voltage inputs (0-10V) or current inputs (0/4-20mA) and 2 analog outputs that can be used either as voltage outputs (0-10 V) or current outputs (0/4-20 mA). The connections are made using screw terminals. The connection to the easy-E4 control relay or another easy-E4 extension is made using the easy-E4-CONNECT1 connector plug (item Y7-197225) which is included in the scope of delivery.