MUST BE CONNECTED TO RED – to RS-485 in OEL8000IIIK/X EARTH GROUND TO MAINTAIN INTRINSIC SAFETY OMNTEC Mfg., Inc., 2420 Pond Road, Ronkonkoma, NY 11779 Phone (631) 981-2001 Fax (631) 981-2007 www.OMNTEC.com File Name: RD625-2-HLO rev2312.docx Page 6 of 10 Rev Date: 3-21-2023...