Stack Lights

Stack lights, also called signal towers or tower lights, provide visual machine status indication on the plant floor, enabling operators and controls engineers to monitor run, fault, warning, and idle states at a glance. This category covers a broad selection of modular stackable tower lights, fixed multi-color wall-mount signal lights, and single-unit pre-wired indicator assemblies, available in 24V DC, 24V AC/DC, and 120V AC input voltages. Configurations typically include two-, three-, four-, and five-stack arrangements combining steady and flashing LED segments in standard IEC colors — green, yellow, red, blue, and white. Mounting options span vertical pole mount, wall mount, and bracket assemblies suited for machine enclosures, conveyor systems, and panel shop installations. Controls engineers and machine builders specify stack lights for discrete machine control, automated assembly lines, and process monitoring applications where fast visual fault identification reduces downtime.