No wires, entirely motion activated—easy to set up, for so many uses! (Deter potential intruders, but also light your path as you come home late at night.) Mount on a roof or wall, or use included stake for the yard. 108 high-intensity LEDs on 3 adjustable-angle panels; remote adjusts sensor/brightness plus sets off alert strobe. Remote uses 2 AAA batteries (included). 13.5" w x 9.75" h x 4.5" d.