Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
1.74509.0112200 RAFI	LED PANEL INDICATOR IP65/IP69	10
45-1T00.10E6.000.100 EAO	(45-1T00.10E6.000.100) INDICATOR	32
QS81XXG24 APEM Inc.	INDICATOR 8MM FIXED GRN 24V SLDR	46
Q14P1CXXHO02E APEM Inc.	14MM PRMNT CHRM HYPR ORG 2VDC	26
Q6R3CXXR12E APEM Inc.	LED PM INDICATOR RECESSED RED	0
13NR480ST-13RDR c3controls	13MM 480V NEON RED LIGHT UNIT	0
Q16P1BXXB24E APEM Inc.	INDICATOR 24V 16MM PROMINENT BLU	0
1.74509.1112200 RAFI	RAFIX 22 FSR SIGNAL LAMP RD/GN 2	0
45-2T00.10N0.000 EAO	INDICATOR ACTUATOR FULL FACE ILL	27
75HR-2212 Visual Communications Company, LLC	NEON PANEL INDICATOR 250V	10
Q14F1BXXHY24E APEM Inc.	14MM FLSH BLK CHRM HYP YLW 24VDC	18
CCLB-2-3061-9909-W Visual Communications Company, LLC	SEALED LED INDICATOR WHITE	100
PM5-A7W28V Califia Lighting (Bivar)	PANEL MOUNT ASSEM 8.1MM WHITE	0
AP1M222-G IDEC	LED PANEL INDICATOR GRN 24V IP65	1
6563307303F Dialight	1/2" DOM YL 72VDC W/LEAD	0
91W-NWA12H-CAO Visual Communications Company, LLC	PMI LED .290" HI-HAT	132
6091112330F Dialight	LED 9MM RED PMI W GASKET	0
6563358203F Dialight	PANEL IND 37.5V 1/2" DOM OR W/LD	0
Q14P1CXXG12E APEM Inc.	INDICATOR 12V 14MM PROMINENT GRN	12
Q6F1CXXY24E APEM Inc.	INDICATOR 24V 6MM FLUSH YELLOW	0

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