Control relay (1), having a housing (2) and functional circuitry (12) covered by the housing (2) to perform the function of the control relay (1), further having a user interface system (13), said user interface system (13) comprising a directional input unit (14) having an operating member (16) and operable to receive at a point in time an input specifying one of a selection of functional parameters and to communicate the specified functional parameters to the functional circuitry (12), wherein the said input unit (24) is operable to receive said functional parameter in response to a user operation of rotating an pushing the operating member (26), wherein the operating member (26) is covered by the housing (2), wherein the operating member (26) is configured to be operated by the user by means of a tool (18), wherein the housing (2) has an operational opening (17) giving access for the tool (18) to the operating member (26).