A-B Rockwell Automation 802X-B4. Watertight Limit Switch, Hazardous Location, Full Switch (Head And Body), Top Push Rod, 2 Circuits, Conduit Entry, 1/2 in. NPT, 46C Low Limit, 121C High Limit, Standard Contacts, Spring Return, Snap Acting, 1 Normally Open Contact, 1 Normally Closed Contact