Panel Indicators, Pilot Lights

Image Part Number Description / PDF Quantity Rfq
UB06KW015F

UB06KW015F

NKK Switches

INDICATOR RECT BLCK HSNG GRN LED

0

HB01KW01

HB01KW01

NKK Switches

SW INDICATOR PB SQ BLK HSNG SLD

44

UB201KW036B

UB201KW036B

NKK Switches

INDICATOR PB SQ SUPER BRGHT WHT

35

LB03KW01

LB03KW01

NKK Switches

IND PB RECT SILVER SLD LB SER

16

LB03KW01-5F05-JB

LB03KW01-5F05-JB

NKK Switches

LED PANEL INDICATOR GREEN 5V

16

G01VC

G01VC

NKK Switches

INDICATOR SW RED LED VERT PC

250

LB03KW01-01-JC

LB03KW01-01-JC

NKK Switches

IND PB ILLUM RECT BLCK 110V NEON

16

UB201KW036F-3JB

UB201KW036F-3JB

NKK Switches

INDICATOR PB GRN ILL SQ FLAT CAP

10

HB02KW01-5F-FB

HB02KW01-5F-FB

NKK Switches

SW IND PB RND GREEN LED DIFF GRN

26

LB03KW01-05-BJ

LB03KW01-05-BJ

NKK Switches

IND PB ILLUM RECT BLACK 5V LAMP

16

YB03WKW01

YB03WKW01

NKK Switches

INDICATOR PB RECT SILVER SLD LUG

47

LB01KW01-5C24-JC

LB01KW01-5C24-JC

NKK Switches

INDICATOR LED SQUARE FOR LB SER

38

UB04KW015C

UB04KW015C

NKK Switches

INDICATOR SQ BLK HSNG RED LED

36

YB03KW01

YB03KW01

NKK Switches

INDICATOR PB RECT SILVER SLD LUG

77

UB01KW035C

UB01KW035C

NKK Switches

INDICATOR SQ BLK HSNG RED LED

33

LB02KW01-5D24-JD

LB02KW01-5D24-JD

NKK Switches

IND PB ILLUM RND LB SER AMB SLD

22

UB06KW015D

UB06KW015D

NKK Switches

INDICATOR RECT BLK HSNG AMB LED

23

KB02VA001

KB02VA001

NKK Switches

KB SERIES MINIATURES INDICATOR W

4

LB02KW01

LB02KW01

NKK Switches

IND PB ILLUM RND BLACK SLD LUG

38

UB06KW015D-DD

UB06KW015D-DD

NKK Switches

INDICATOR RECT AMB ILLUM AMB CAP

23

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

TypeFunctional FeaturesApplication Examples
LED Panel IndicatorsLow power consumption, long lifespan, instant responseIndustrial control panels, HVAC systems
Lamp-based Pilot LightsHigh brightness, compatibility with AC/DC circuitsMachinery status indication, heavy-duty equipment
Combined Indicator/SwitchIntegrated illumination with manual controlEmergency stop circuits, control desks
Multi-color IndicatorsProgrammable color outputs for status differentiationNetwork routers, medical diagnostic equipment
Remote IndicatorsSeparate light source and panel moduleAutomotive 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

ParameterSignificance
Operating Voltage RangeDetermines 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 RatingDefines 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

ManufacturerRepresentative ProductKey Features
Phoenix ContactILLINOX seriesModular design, IP69K rating
OmronXLDC12E-4AHUltra-compact LED indicator with 100,000-hour lifespan
Siemens8WA1000 seriesMulti-voltage capability (24-415V AC/DC)
EatonPilot Lights H45KShock-resistant filament lamps for heavy-duty use
TE ConnectivityCapLED 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
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