What is a rainproof power supply and what are its benefits and uses?

What is a rainproof power supply and what are its benefits and uses?

A rainproof power supply is an AC-to-DC unit with a specially sealed enclosure and advanced insulation designed for harsh outdoor environments. By resisting moisture, dust, and temperature extremes, it delivers stable voltage to outdoor digital signage exposed to rain and grid fluctuations, thereby reducing environment-induced failures.

High-efficiency DC-DC stages and smart protection circuits raise overall system efficiency. Many models feature alloy-aluminum housings and IP67 certification for full protection against water and dust ingress. Automatic voltage regulation (AVR) keeps LED strings and controller boards operating uniformly even under input fluctuations, while waterproof locking connectors and low-noise, intelligently controlled fans increase reliability and optimize power consumption.

Environmental testing shows these supplies maintain stable performance in high humidity and low temperatures, which is critical for city billboards and roadside guidance displays. The video below demonstrates a lab stress test of a rainproof unit.