A-B Rockwell Automation 440P-ADP1S11D5. Metal Safety Limit Switch, Metal Compact Style, Full Switch (Head and Body), Panel Mounting Dome Plunger, 2 Circuits, Quick Disconnect, Snap Acting, 1 Normally Open Contact, 1 Normally Closed Contact, Standard Contacts, 2C Low Temp Limit, 70C High Temp Limit