Night for vision camera. If you want the night for vision function, need to install LED lights when working. When use in daylight, to get a better effect, you can use the camera without light. When taking the photo in daytime model, the green part will be a little it is normal for OV5647 sensor. Can access sensitive lights. Four screw holes can be installed sensitive light other fill light, you can switch freely, no longer worry about the light is too weak. Supports all revisions.Use for both 4 Model B + / 3B + / 3B and for W / 1.3. Focal adjustable (manually).