it doesn't work that way. All objects emit radiation and the camera measures it. you may be confused with infrared security beams that do have an emitter and a receiver.
Shovelhandle Reviewed by Shovelhandle on . Infrared light A question that's been on my mind a bit lately. Maybe someone has the answer. I've been using a webcam in my grow tent to keep an eye on things. When the lights turn off, this thing switches to IR mode and can "see in the dark." Will the IR emitted from the camera have any effect on the plant growth? Rating: 5