SPST PNP
Banner D12EP6FP D12 Expert Fiber Optic Sensor 41965 With Connector
This item from Industrial Service Solutions handles temperature extremes without problems.
Banner D12EP6FP D12 Expert Fiber Optic Sensor 41965 2 ft+3 in L Cable
A nice touch with TECHTONGDA is the no-nonsense labeling on the controls.