| Color | Red, Amber, Green |
| Voltage | DC12/24V |
| Material | PC + ABS base |
| Power | 1 W per layer |
| Flashing pattern | Continuous lighting, Strobe flashing |
| Waterproof Rate | IP65 |







Stack lights (also known as signal tower lights, indicator lights, andon lights, warning lights, industrial signal lights, or tower lights) are commonly used on equipment in industrial manufacturing and process control environments to provide visual and audible indicators of a machine's status to machine operators, technicians, production managers and factory personnel.
They typically use LED or xenon-type strobes as their illumination source and are columnar structures placing colour-coded indicator segments on top of one another. Segments in combinations of red, yellow, green, blue or clear white are actuated independently and are either off, steadily lit, or flashing.