Using only the free power of the sun these outdoor lamps switch on automatically in the dark when body heat motion is detected their single super power leds are brighter than a 40w bulb so they will illuminate driveways paths alleyways patios and porches to deter burglars or welcome you home the high quality solar panels ensure they work all year round even during the long cloudy days of winter the lockable wall brackets also prevent theft and make the lamps easy to dismount if needed