The price difference between waterproof power supplies and rain-proof power supplies widely used in the sign industry is very large. According to industry insiders, the industry's better brand 12v400w waterproof power supply generally sells for more than 300 yuan, and the price of high-grade waterproof power supplies even exceeds 1,000 yuan.

The price of the rainproof power supply of the first-line brand 12v400w is also between 120-180 yuan, while the price of the rainproof power supply of the middle and high-end ordinary brands is generally around 80 yuan. There are cheaper ones, about 20 yuan.

So what makes this difference?

1. Prevent salt spray

This may not be noticed by many people. The damage rate of outdoor rainproof power supplies in coastal areas is much higher than in inland areas, and the average life span is much shorter.

Taking the average price of rain gear power in the market as an example, the use of damage rate in other fields is about 2% for a year and a half.The damage rate in coastal areas such as Shenzhen and typhoon-prone areas has increased to 10%, and in Hainan, even An ordinary rainproof power supply lasts less than three months.

This is the terrible thing about salt spray. Especially in the surrounding sea area, the concentration of salt fog in the air is very high, which will corrode the circuit quickly and cause great damage to the power supply itself.

2. Moisture-proof and waterproof

Outdoors, unlike the stable indoor environment, due to various weather conditions, such as heavy rain and heavy rain, in order for the light box LED luminous characters to run in the rain, the outdoor power supply must have the most basic moisture-proof and waterproof functions.

3. Anti-dust

Although dust is not as visible as rain, it occurs all the time in nature. The influence of outdoor switching power supplies is also very large, which easily corrodes the internal components of the power supply, causing damage to the power supply and short service life.