Seems to work, but both the power led and signal out led are red, not green. is this a new revision or do i have something hooked up wrong?

Mine are red, too. And they work just fine. No, I don't think you have anything hooked up wrong.

I am looking for a sensor that can be hidden under a plastic surface, would this be able to detect though a sheet of acrylic?

Not sure about a clear sheet. I thought I had a piece and I would give it a try but I did not. I did have a sheet of anti-glare and it did set it off so that material clarity will definitely not work.

Brand	HiLetgo
Manufacturer	HiLetgo
Model	3-01-0063
Package Dimensions	10.49 x 8 x 3.81 cm; 32 g
Item model number	3-01-0063
Batteries Included	No
Batteries Required	No
Has Auto Focus	No
Programmable Buttons	No
Manufacturer	HiLetgo
Country of Origin	India
Item Weight	32 g

HiLetgo 10pcs IR Infrared Obstacle Avoidance Sensor Module for Arduino Smart Car Robot 3-Wire Reflective Photoelectric for Arduino Smart Car Robot

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