CSVS1 Light Bulb Camera and Decoder. In the most inconspicuous place we now have a covert camera tucked inside a light bulb. This light bulb can be used for outdoor or indoor applications. When you need another option in wireless try carry current transmission better know as power line technology . All you have to do is screw the light bulb in to any fixture and plug the decoder into an electrical socket in your home or business, plug in the RCA video cable to any TV, VCR or DVR and you have surveillance! This item is perfect for the DIY or any pro with its portability and ease of use.