No need for an electrician and no electricity bills either this outdoor lamp works solely on solar power because it has sensors that switch it on only in the dark and when body heat motion is detected the super power led is brighter than a 40w bulb so it will illuminate driveways paths alleyways patios and porches to deter burglars or welcome you home the high quality solar panel ensures it works all year round even during the long cloudy days of winter the lockable wall bracket also