The red switch on a yellow background normally reserved for e-stops meets OSHA, NFPA 79 and ISO 60204-1 requirements. These safety compliant emergency stop switches are available in both metal and plastic and with either a 40mm or 60mm operator head. The yellow enclosures can be fitted with any of the vendor’s expanded line of e-stop switches also including momentary and maintained; pull to release and maintained; twist to release and maintained; and twist key to release operators.Automation Systems Interconnect Inc. www.asi-ez.com877.650.5160