The HI-ESOK-C is a covert electric socket camera that 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. This security camera have a 3.7mm pinhole mini lens with 78° field of view, 480 lines of resolution and low 0.4 lux rating.