Uses: Backup power, 12-volt battery charging, RVs & boats. Blocking diode protects battery discharge at night. Temp Range: -40 degrees to 176 degrees F. Max output 60 watts 4 amps. Includes: 4 x 15 watt amorphous solar panels, plastic PVC frame, 12V DC plug, alligator battery clamps, mounting screws, extra wiring, 4 in 1 wire connector, 12V DC socket for powering 12V products, 200 watt modified sine wave inverter, and a 7 amp solar charge controller. Dimensions (in): 41L x 13-1/4W x 16-1/4H.