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 for resistance temperature sensors Pt100, Pt1000 or Ni1000. The Pt100, Pt1000 or Ni1000 inputs are suitable for two- and three-wire connections. The connections are made using push-in terminals. The connection to the control relay or another extension of the easyE4 series is made using the EASY-E4-CONNECT1 connector (item 197225), which is included in the scope of delivery.