began 2 Pack Solar Wall Mounted Motion Sensor Light KALTSLZARBA & KALTSLZARWA Quick Start Guide This solar sensor light uses the solar panel to absorb light and heat energy, converting it into electrical energy and then charging the internal battery. It then uses the stored battery power to operate the sensor and LED light. The lighting strength is dependent on the intensity and duration of sunlight received during the day. Due to this, install these in a place with direct, prolonged sunlight.