Allen-Bradley 800MR-QT24R Pilot Light Red Lens

Allen-Bradley 800MR-QT24R is a 22.5 mm round pilot light with a red lens and Push-to-Test function, designed for panel mounting in 24 V AC/DC control circuits. This incandescent lamp operates at full voltage 24V AC/DC and is a standalone pilot light (no contact cartridge). It belongs to the 800MR family and supports push-to-test (QT) operation to verify lamp function without energizing the main circuit. Connection options include stab-terminal interfaces or termination-free configurations depending on the variant. The compact 22.5 mm footprint fits standard panel cutouts and PB-style pushbutton assemblies, making it suitable for indicating machine status or fault conditions in industrial control panels. The red lens provides immediate visual status cues, commonly used to signal stop or fault states in automation lines.