Amazon.com: LUBAN 12V LED Tower Stack Lights, Industrial Warning Signal Lights Tower Lamps, Facility Safety Signal Indicator, LED Andon Light (DC 12V/2 Layers/No Sound) : Industrial & Scientific
Menics PWE-201-RG 2 Stack LED Tower Light, Wall Mount, 12V
uxcell 24V DC Industrial Red Green LED Signal Tower Lamp Warning Stack Light: Automotive Turn Signal Light Assemblies: Amazon.com: Industrial & Scientific