Engineered for multi-state workstations, CNC machine cells, and complex assembly lines, ANDONT 4-stack LED Andon tower lights provide an expanded four-tier visual signaling system: Red (Fault/Stop), Yellow (Warning), Green (Normal Operation), and Blue (Material Refill / Supervisor Call). Every workstation kit arrives 100% pre-assembled and pre-wired with genuine ABB® selector switches, a certified MEAN WELL® industrial power supply, and heavy-duty mounting hardware—delivering zero-wiring, plug-and-play deployment right out of the box.