Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
FL1P-8NJ-1-Y12V Mallory Sonalert Products	LED YEL 8MM NUT 12VAC/DC STK	35
6572504103F Dialight	LED 17.46MM RED DIFF PANEL MOUNT	42
6301804304F Dialight	30MM FLT BL 24VDC W/TERM	10
2620QK1 Visual Communications Company, LLC	LAMP NEON RED 120V PC MNT	0
5102H3-5V Visual Communications Company, LLC	LED AMBER 1/4" HOLE 5V PANEL MNT	1309
CCLB-1-3061-9933-I Visual Communications Company, LLC	SEALED LED INDICATOR WHITE	75
QS121XXG24 APEM Inc.	INDICATOR 12MM FIXED GR 24V SLDR	95
Q6R3CXXW24E APEM Inc.	LED PANEL MOUNT INDICATOR WHT	0
QS101XXHY110 APEM Inc.	INDICATOR 10MM FIXED HI YEL 110V	0
Q22P1CXXR24E APEM Inc.	INDICATOR 24V 22MM PROMINENT RED	0
Q8P5CXXHY12E APEM Inc.	INDICATOR 8MM PM PROMINENT YELLO	25
S18LWXXPQ Banner Engineering	INDICATOR EZ-LIGHT WHITE	6
PL22SHLW24 Carlo Gavazzi	PLT LIGHT 24 VAC/DC CLEAR LED	18
24979673332504F Dialight	LED PANEL IND GRN 3.6V CYLINDER	63
DX1093/TR Bulgin	LED PANEL IND AMB/GRN/RED 2.4V	29
CNX_480_1_GTP_12 Visual Communications Company, LLC	IND PNL MNT GREEN TRANSP	513
FL1M-6CW-2-Y24V Mallory Sonalert Products	LED YEL 6MM NUT 24VDC STK	129
Q8R1CXXG12E APEM Inc.	INDICATOR 12V 8MM RECESSED GRN	0
Q8F1BXXR12E APEM Inc.	INDICATOR 12V 8MM FLUSH RED	14
FL1M-8FW-1-G24V Mallory Sonalert Products	LED GRN 8MM NUT 24VAC/DC STK	116

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