Select a power supply that meets the requirements of the national standard; select a power supply with short circuit and overload protection; select a power supply with flame-retardant components; select a cable that meets the requirements of the national standard; connect the power supply and the luminous characters correctly.

In outdoor sign projects, the working environment of LED dimmable power supplies often has to withstand extreme weather. For example, in the winter in the north, it is extremely cold, and the temperature of more than 30 degrees below zero is a very common temperature. At this time, in order for the constant voltage LED power supply to work normally, it must have a low temperature start function to ensure that the luminous characters can start normally under the condition of minus 30 degrees;

In the south, especially during the rainy season, fog, humidity, and dust are the harsh conditions that test the dimmable LED drive power supply. To work normally in such an environment, it is necessary to ensure that the power supply products are treated with three-proofing, moisture-proof, dust-proof and fog-proof, and to ensure normal use at the seaside and in damp weather.