Siemens 8WD42 20-5AC Sirius Signal Column, Thermoplastic Enclosure, IP54 Degree of Protection, 50mm Diameter, Steady Light Element, LED Light, Green: Tower Stack Lights: Amazon.com: Industrial & Scientific
SIEMENS 8WD4 420-5AC GREEN LED LIGHT ELEMENT FOR STACKLIGHT 24V AC/DC | eBay
Siemens 52PL5M3 Heavy Duty Pilot Light, Water and Oil Tight, Glass Lens, Integrated LED Module, Green, 120VAC Voltage: Indicator Lights: Amazon.com: Industrial & Scientific