Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
SSI-RM3091GD-150 Lumex, Inc.	LED 3MM GREEN 6"LDS REAR PANELMT	3258
Q22F1AYXXSY28AE APEM Inc.	INDICATOR 28V 22MM FLUSH YELLOW	49
6563354304F Dialight	LED PNL IND ORG 24V IP67/NEMA 4X	63
QS123XXHB110 APEM Inc.	INDICATOR 12MM FIXED HI BLU 110V	480
PM5-PYDW12.0 Califia Lighting (Bivar)	PNL MNT W/ WIRE 590NM 300MCD YLW	0
FL1P-12QW-2-Y110V Mallory Sonalert Products	LED YEL 12MM SNAP 110VAC/DC STK	5
UB204KW035F NKK Switches	INDICATOR PB SQ BRIGHT LED BLUE	35
Q6F3BXXB12E APEM Inc.	LED PM INDICATOR FLUSH BLUE	9
5561704304F Dialight	LED PNL MT 1" 24V WT FLAT YLW	0
FL1P-8QW-2-G110V Mallory Sonalert Products	LED GRN 8MM SNAP 110VAC/DC STK	72
QS123XXG12 APEM Inc.	INDICATOR 12MM FIXED GR 12V WIRE	33
A-LED8-1RAAS-MR7-1 ASSMANN WSW Components	LED 3MM RED PNL MNT WATER PROOF	75
6773132321F Dialight	7MM HR/R PMI-6VDC W/O-RING	27
HB01KW01-5F-FB NKK Switches	SW IND PB SQ GREEN LED DIFF GRN	10
2151A1 Visual Communications Company, LLC	LAMP NEON RED 250V PNL MNT	67
QS103XXB12 APEM Inc.	INDICATOR 10MM FIXED BL 12V WIRE	8
Q14F3BXXHR220E APEM Inc.	FLUSH BLACKBEZ HYRED 220VAC IP67	14
S08F-12Y IndustrialeMart	HIGH LED 8MM FLAT 12V YLW IP67	40
1052A5 Visual Communications Company, LLC	INDICATOR NEON GREEN PANEL MNT	103
S10F-10Y IndustrialeMart	HIGH LED 10MM FLAT 110V YLW IP67	40

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