-LED modules can be freely combined and added or removed freely
-The LED module does not affect the line definition on any layer
- Adding or removing LED modules requires replacing the center bolt
-With buzzer Protection level: P54
-Flash frequency: 60-90 times/min
-Brightening frequency: 60-90 times/min
-The buzzer volume is adjustable
-Direct installation without beep function
-Lampshade:PC
-Lamp body: ABS
-Straight rod: AL