Mono-crystal or multi-crystal silicon solar cell, 18V, Maintenance-free gel rechargeable battery, Special controller for solar lamps (including protection devices for charging and releasing, light-controlling, temperature-compensating) 12V/24v Auto solar controller, The pole is made of high quality steel, with painting after hot galvanization, it's strong and durable, Acceptable temperature: -40 ~ 60℃, Low pressure sodium lamp, LVD,LED, CFL,Height: 2.5 to 9.0meters, Lighting 10-12 hours everyday and continuouslyworking 3 to 5 days in overcast or rainy day.