NA1-PK5 sensor enquiry

Hey. I need to know whether this sensor comes as a pair if purchased from Digikey. Does it contain a receiver and emmiter pair? Cannot get a hold on technical advisor through live chat. Thanks for replies

https://www.digikey.com/product-detail/en/panasonic-industrial-automation-sales/NA1-PK5/1110-1982-ND/3899514

Greetings,

It appears that these are sold as emitter/receiver pairs, given the lack of separate part numbers for either specified in the product datasheet.