Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
6791222332F Dialight	9MM HG/G PMI-12VDC W/O-RING	479
Q14P5CXXHR24E APEM Inc.	LED INDICATOR 14MM PROMINENT CHR	21
FL1P-12QW-1-G24V Mallory Sonalert Products	LED GRN 12MM SNAP 24VAC/DC STK	3
Q10F5SXXSR12E APEM Inc.	LED PANEL INDICATOR RED 12V IP67	8
Q14P1CXXY24E APEM Inc.	INDICATOR 24V 14MM PROMINENT YEL	95
5111F1 Visual Communications Company, LLC	LED RED 5/32" HOLE PANEL MOUNT	1270
NL67H2A Bulgin	INDICATOR LIGHT NEON 110V AMBER	0
M16-AW-5D Omron Automation & Safety Services	PILOT LIGHT 5V LED SQUARE WHITE	70
H10F-03G IndustrialeMart	HIGH LED 10MM FLAT 3VDC GREEN	57
1092QM3-28V Visual Communications Company, LLC	LED PMI, AMBER, SMALL DOME, 28V	20
PMR4BWD Califia Lighting (Bivar)	LED PANEL INDICATOR BLUE 4V	32
32R-2113T Visual Communications Company, LLC	NEON PANEL INDICATOR 125V	100
Q6R1CXXW12E APEM Inc.	INDICATOR 12V 6MM RECESSED WHT	0
1051QC3 Visual Communications Company, LLC	LAMP NEON AMBER 220V PNL MNT	115
6301505304F Dialight	30MM FLT RD 120VAC W/TERM	20
6571003303F Dialight	LED 17.46MM WHITE DIFF PANEL MNT	28
2191L5-24V Visual Communications Company, LLC	LED IND LIGHT 24V GREEN	470
CCLB-1-3046-9923-I Visual Communications Company, LLC	SEALED LED INDICATOR MID ULTRA R	175
Q8R3BXXG12E APEM Inc.	LED PM INDICATOR RECESSED GREEN	62
LH1050S Bulgin	HLDR INDICATOR PNL CHRM T1 3/4	540

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