Chicago Miniature Lamp Works 1050QA4 Lamp Indicator

The Chicago Miniature Lamp Works 1050QA4 is a neon panel indicator rated for 105–125 VAC that emits a white glow to signal status on control panels and electrical equipment. It is a non-relampable indicator in the 1050QA–1053A series from Visual Communications Company’s Chicago Miniature Lighting line, and it uses quick-connect terminals sized 0.187 inches (4.7 mm) for straightforward wiring. The device features a white lens and is specified as a white neon indicator, intended for applications where a mains-voltage status indicator is required without LEDs. Typical uses include status indications on electrical panels, control consoles, and automation equipment operating within standard line-voltage circuits. As a neon indicator, it relies on gas-discharge illumination rather than LED technology, making it a compact, legacy-friendly option for signifying active conditions in industrial environments.