22mm AC 60-500V LED Voltage Meter Indicator

This 22mm voltage meter indicator combines the functions of a signal lamp and a digital voltmeter in a single panel-mount device. The unit uses a bright red LED display to show the measured AC voltage while the surrounding pilot light indicates whether the circuit is energized. Unlike a standard indicator lamp that only shows on/off status, this LED pilot light voltmeter provides a direct voltage reading across a wide AC 60-500V range, making it useful for troubleshooting and monitoring electrical panels. The meter operates at 50-60Hz and fits a standard 22mm panel cutout, which is common in industrial control cabinets and machine control panels. Because the display and the pilot light share the same housing, wiring is simplified and panel space is conserved. This panel mount AC voltmeter is suitable for three-phase motor control panels, telecommunications equipment racks, mining machinery cabinets, and power distribution boards. The device is designed for panel mounting and uses a bright LED light source with a typical life of over 30,000 hours. Operating temperature is specified from -25°C to +55°C, covering the ambient conditions found in most indoor electrical enclosures. Whether used as a direct replacement for an existing 22mm indicator lamp or as part of a new panel build, this AD16 voltage indicator offers a practical combination of voltage display, status indication, and compact panel integration.