Smart Pedestrian Warning Bollards Technical specification Features and benefits Sheet metal case, height 1.2 meters Use P10/P5 bright red-green display module Infrared detection technology Power-down memory backup function Lightning protection; watchdog stable operation high-quality MP3 module is embedded, supporting MP3 format audio files Support manual volume adjustment function, which can be adjusted according to various occasions; can be customized for automatic 7-level volume Built-in 20W waterproof speaker sou...