The Cognex checker 201 825-0042-2R a vision sensor 821-0019-1R rev d 22-26VDC is a sensor/switch from Cognex. It detects a change in state, position, or presence and relays that information to a controller or operator interface. Key specifications noted on this listing include 22-26VDC, 26VDC. It is commonly in process monitoring and machine safety or positioning applications.
