Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
Q6R3CXXG12E APEM Inc.	LED PM INIDCATOR RECESSED GREEN	0
M22N-BP-TWA-WB Omron Automation & Safety Services	LED PANEL INDICATOR WHT 12VAC/DC	10
M22R-EA-12A Omron Automation & Safety Services	INDICATOR,BLUE,12V	14
6563124304F Dialight	1/2" DOM R/G 24VDC W/TERM	45
5580701007F Dialight	LED PANEL IND RED SNAP-IN	696
M22N-BN-TGA-GB Omron Automation & Safety Services	LED PANEL INDICATOR GRN 12VAC/DC	0
M16P-03G IndustrialeMart	LED 16MM PROTRUDE 3VDC GREEN	39
SSI-LXH387SRD Lumex, Inc.	LED 4.9MM FLAT TOP SUP RED PNLMT	5010
APW199D-G-120V IDEC	LED PANEL INDICATOR GREEN 120V	1
44W-NKR120-CRO Visual Communications Company, LLC	PMI .250" LED 120V WIRE CLEAR RE	78
Q8F1BXXHW24E APEM Inc.	8MM FLSH BLK CHRM HYP WHT 24VDC	75
E10P-12Y IndustrialeMart	LED 10MM PROTRUDE 12VDC YLW IP67	40
M12P-10Y IndustrialeMart	LED 12MM PROTRUDE 110V YELLOW	45
FL1M-8SJ-2-R110V Mallory Sonalert Products	LED RED 8MM NUT 110VAC/DC STK	37
S22L2SRGB14QP Banner Engineering	S22 PRO EZ LIGHT INDICATOR MULTI	2
Q14P1BXXB12E APEM Inc.	INDICATOR 12V 14MM PROMINENT BLU	0
Q14F3BXXSB220E APEM Inc.	FLUSH BLACKBEZ SUPER BRBLUE 220V	15
556360A204F Dialight	1"DOME GRN LED PMI CONST INT	19
M22N-BN-TRA-RB Omron Automation & Safety Services	LED PANEL INDICATOR RED 12VAC/DC	0
6231403304F Dialight	30MM FLTPMI YLW 24VDC W/TERM	90

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