The selection of solar street lights are LED lights, LED solar street lights, because it has the characteristics of high efficiency, energy saving, environmental protection, easy maintenance, high safety, outdoor service conditions and regional climate impact, high temperature or low temperature is also a major factor for the test of DC terminals. Extreme high and low temperatures will destroy the insulation material, cause the insulation resistance and voltage resistance to be reduced, so that the connector performance is reduced or even failed. Amass LC series connectors are made of high temperature resistant material PBT, resistant to -40℃ to 120℃ high and low temperature environment, which can adapt to the long-term continuous and stable operation of street lamps in most temperature environments.