Siemens 3SU1801-2NG00-2AA2 (3SU18012NG002AA2), Enclosure For Command Devices. 22Mm. Round. Enclosure Material Plastic. Enclosure Top Part Yellow. 1 Command Point Plastic. Command Point At Center. A=Em. Stoppalm Pushbutton Red. Positive Latching. Pull To Unlatch. 1Nc. 1No. Screw Terminal. Base Mounting