This light combines a high-efficiency solar panel, controller, high-capacity lithium-ion battery, and bright, long-lasting LEDs for lighting streets, parking lots, boat docks, driveways, walkways, green space, industrial installations, remote gates and ranch corrals. Light turns on automatically at dusk and off at dawn. Integrated motion sensor automatically increases light to full brightness when needed (for 30 seconds per motion sensed). Mount fixture so that module faces toward sun for optimum charging. Fully charged with 8 hours of direct sunlight. Charge will last for up to 3 cloudy days of operation. Easily installs on steel or aluminum pole (not included). Mounts on an up to 2.5" OD (outside diameter) pole (bracket and stainless steel hardware included). LED Lamp...... 5W Solar Module.............. 7W View Angle................. 120 degrees Color Temp................ Pure White (6,000-6,500 K) Working Time............. first 5 hours at 840 lumens, then 300 lumens standby for remainder of dusk hours; full 840 lumens when photo infrared sensor activated Battery........................ 13,200 mAH, 3.7 volt DC, maintenance-free sealed Lithium-Ion battery (replaceable) Battery Life ............... up to 5 years Construction.............. Aluminum Alloy Recommended installation height range - 3 to 4 meters Recommended installation distance between poles - 10 meters