Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
L60D-A12-W Visual Communications Company, LLC	PMI 5.9MM 583NM AMB 12V WT 6" LD	29
1090C3-28V Visual Communications Company, LLC	INDICATOR INCAND AMBER PANEL MNT	97
PCL2224V100B Visual Communications Company, LLC	PMI RND 22MM LED 24V SCREW BLOCK	78
1090A5-28V Visual Communications Company, LLC	INDICATOR INCAND GREEN PANEL MNT	211
1092QD1-12V Visual Communications Company, LLC	LED PMI, RED, SEMI-DOME, 12V, 3/	239
1092C1-28V Visual Communications Company, LLC	LED PANEL INDICATOR RED 28V	0
32-2111T Visual Communications Company, LLC	NEON PANEL INDICATOR 125V	60
1090QA1-28V Visual Communications Company, LLC	INDICATOR INCAND RED PANEL MNT	5
CDLB-0-2702-9908-I Visual Communications Company, LLC	LONG BODY PMI RND .230" LED 12V	95
1090A5-12V Visual Communications Company, LLC	INDICATOR INCAND GREEN PANEL MNT	140
5110F5-5V Visual Communications Company, LLC	LED GREEN 5/21" HOLE PANEL MOUNT	289
1091QM1-12V Visual Communications Company, LLC	LED IND LIGHT 12V RED	421
1091QM5-24V Visual Communications Company, LLC	LED IND LIGHT 24V GREEN	0
CDLB-1-2701-9923-I Visual Communications Company, LLC	LONG BODY PMI RND .230" LED 28V	94
CNX714C900FVW Visual Communications Company, LLC	IND TUFFLED FLEXVOLT 14MM WH/CLR	29
CNX718N400120T Visual Communications Company, LLC	LED 18MM AMBER 120V TAB PNL MNT	0
PML50SRFVW Visual Communications Company, LLC	.688" DIA (17.5MM) RED LED PANEL	1959
PML50SYFVW Visual Communications Company, LLC	.688" DIA (17.5MM) YELLOW LED PA	42
1092QA3-12V Visual Communications Company, LLC	LED PMI, AMBER, HI-DOME, 12V, 3/	28
5110F1 Visual Communications Company, LLC	LED RED 5/32" HOLE PANEL MOUNT	1254

Panel Indicators, Pilot Lights

1. Overview

Panel indicators and pilot lights are optoelectronic devices that provide visual status feedback in electrical and electronic systems. These components convert electrical signals into light outputs, enabling operators to monitor equipment conditions at a glance. Their importance spans across industrial automation, consumer electronics, transportation, and medical devices, where reliable visual indication ensures operational safety, efficiency, and user interaction.

2. Major Types and Functional Classification

Type	Functional Features	Application Examples
LED Panel Indicators	Low power consumption, long lifespan, instant response	Industrial control panels, HVAC systems
Lamp-based Pilot Lights	High brightness, compatibility with AC/DC circuits	Machinery status indication, heavy-duty equipment
Combined Indicator/Switch	Integrated illumination with manual control	Emergency stop circuits, control desks
Multi-color Indicators	Programmable color outputs for status differentiation	Network routers, medical diagnostic equipment
Remote Indicators	Separate light source and panel module	Automotive dashboards, aerospace control systems

3. Structure and Components

Typical construction includes:

Light Source: LED chips or filament bulbs with specific color/wavelength
Housing: Thermoplastic or metal body with mounting threads (e.g., M20, NPT)
Optical System: Diffused or focused lens for uniform light distribution
Electrical Interface: Screw terminals, PCB pins, or quick-connect terminals
Sealing Elements: Rubber gaskets for IP65+ protection ratings

4. Key Technical Specifications

Parameter	Significance
Operating Voltage Range	Determines compatibility with control circuits (3-480V AC/DC)
Luminous Intensity (cd)	Affects visibility in different lighting conditions
Color Wavelength (nm)	Standardizes visual coding (e.g., 630nm red for warnings)
MTBF (Hours)	Indicates reliability (LED: 50,000-100,000 hours)
IP Rating	Defines environmental protection level
Response Time (ms)	Critical for real-time status monitoring

5. Application Areas

Industrial: CNC machines, PLC control cabinets, factory automation
Transportation: Locomotive control panels, aircraft avionics
Medical: Patient monitors, imaging equipment status indicators
Consumer: Home appliance power indicators, audio equipment
Energy: Solar inverters, smart grid monitoring systems

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Phoenix Contact	ILLINOX series	Modular design, IP69K rating
Omron	XLDC12E-4AH	Ultra-compact LED indicator with 100,000-hour lifespan
Siemens	8WA1000 series	Multi-voltage capability (24-415V AC/DC)
Eaton	Pilot Lights H45K	Shock-resistant filament lamps for heavy-duty use
TE Connectivity	CapLED	Capacitive touch-enabled indicator

7. Selection Recommendations

Key considerations:

Environmental factors: Temperature range (-40 C to +85 C), vibration levels
Electrical compatibility: Voltage matching and circuit type (AC/DC)
Visibility requirements: Ambient light conditions and viewing distance
Certification needs: UL, CE, RoHS compliance for regulatory environments
Mechanical specifications: Panel cutout size (commonly 16/22/30mm)

Example: Selecting an IP67-rated LED indicator with 24V DC operation for a food processing plant's washdown area.

Industry Trends

Emerging developments include:

Integration with IoT systems for smart status monitoring
Miniaturization for high-density panel designs
RGB-LED technology for dynamic color coding
Energy harvesting indicators for self-powered operation
Enhanced durability coatings for extreme environments