... only to the city's night lights bring light, and gave city has added a beautiful scenery.2.System ... energy, energy saving environmental protection.2). Two circuits output, light control and time control, automatic open, turn off the lights.3 ... level IP54Service life(year)above 152).Solar panels, light source, and other ancillary equipments ITEMREMARKSolar panelsmonocrystalline silicon,service life 20 ...