Rockwell Automation Control Tower™ 855E-24TL6 Steady Stack Light Module, 24 VAC/VDC, LED Lamp, Socket Mounting, Blue, Specifications Met: UL 508, CSA C22.2 No. 14, EN/IEC 60947-1/60947-5-1, cULus File No. E14840, Guide No. NKCR/NKCR7, CE Marked