The covert electric socket cameras work equally well in a warehouse or outside watching your receiving docks. Thousands of us go to work everyday and pass electrical boxes just like this and pay no attention to them. No one will suspect that this electrical socket box actually houses a wide angle pinhole camera. Perfect solution for your covert operation. All of the camera have a 3.7mm 78° field of view pinhole mini lens. The color cameras have 480 lines of resolution and low 0.4 lux rating for color picture.