500mm IR Sensor SKU: ELB140D3O

I recently purchased the 500mm IR sensor but when I plug it into my analog board it turns on but my system does not seem to see it so I get know voltage change when sensing. Turning the potentiometer doe change any thing. My system plug in is set up for the +5vcc, signal and ground.

Dear customer,

According your description, because there are some 500mm IR sensor we are selling, I don’t know which IR sensor you talk about.
Please give me your product link.

And what device or board you plug in?Base shield? Or others?With Arduino?Seeeduino?Version?
Any code?If you provide those, it would be very helpful.

Best regards,