Content : 24V/90W solar panel×2pcs solar panel Life time: 20 years Battery: Deep Cycle Battery 12V/100AH 2pcs life time:2-3 years Light source: 55W/24V low pressure sodium lamp produced by OSRAM or PHILIP Controller/working conditions: (1) Switched on automatically with light sensor (2) Switched off automatically with built-in timer (default: 8 hours) (3) Battery over-current and over-discharge protection (4) Continuous working duration under cloudy weather: 2-3 days (5) Dustproof and waterproof Class 2 IP65 Wind resistant for the solar panel support: 280km/h Temperature: -20-60