1784-U2DN

Physical key to ensure proper connection alignment
Can provide power through only one pair of the four available contacts, so the other available pair can be used for single channel E-stop
Highly pliable polyvinylchloride (PVC) jacket material
E-stop T-ports and shorting plugs are red for easy identification
Both conventions have the same color code going to the same spot but they use a different pin numbering designation
Many end devices, including Rockwell Automation® hardened I/O products, use a different pin numbering convention for 4-pin mini connections than that used on physical media products
Sized to fit inside 1-in. conduit