Unknown Components

[mecmast]

Hi all,

I've a pcb with two unknown components. I'm adding photos. Would you please help me what are the components are?

[mecmast]

I have showed them up in blue circles

[SMDFlea]

Looks to me like a sensor of some kind. What is this board from

[mecmast]

It is from a fiber production machine. There is a hole between two components. There goes fiber line. When the fiber/rope ends or breaks, the sensor activates.