[kuroguro]

The sad thing is there are certain IR wavelengths that are a lot less affected by the sun and nobody bothered to check for an outdoor product...

[lotsofpulp]

The garage door obstruction sensors are located inside the garage, so it technically might be an indoor product.

Although, the possibility of a garage being oriented such that the sunlight would directly hit the sensors while the garage door is open seems like it could be a not infrequent occurrence.