Panel Indicators, Pilot Lights

Image Part Number Description / PDF Quantity Rfq
Q12P1CXXY24E

Q12P1CXXY24E

APEM Inc.

INDICATOR 24V 12MM PROMINENT YEL

5

E16R-24R

E16R-24R

IndustrialeMart

LED 16MM ROUND 24VDC RED IP67

18

6561404304F

6561404304F

Dialight

LED 1/2" FLAT BLUE 24VDC TERM

81

5581201001F

5581201001F

Dialight

LED PMI SNAP-IN 585NM YLW .156"

780

QRM85BXXY12E

QRM85BXXY12E

APEM Inc.

LED PMI REAR MOUNT YELLOW

0

FL1P-8QW-2-B110V

FL1P-8QW-2-B110V

Mallory Sonalert Products

LED BLU 8MM SNAP 110VAC/DC STK

12

M16R-12G

M16R-12G

IndustrialeMart

LED 16MM ROUND 12VDC GREEN

37

5595601027F

5595601027F

Dialight

LED PMI SNAP-IN GRN PVC FREE

36

H16F-20B

H16F-20B

IndustrialeMart

HIGH LED 16MM FLAT 220V BLUE

20

E12P-24G

E12P-24G

IndustrialeMart

LED 12MM PROTRUDE 24VDC GRN IP67

40

QS61XXG12

QS61XXG12

APEM Inc.

INDICATOR 6MM FIXED GRN 12V SLDR

0

Q22F1CXXG12E

Q22F1CXXG12E

APEM Inc.

INDICATOR 12V 22MM FLUSH GREEN

0

LB02VA001

LB02VA001

NKK Switches

LB SERIES STANDARD SIZE INDICATO

228

QS101XXW24

QS101XXW24

APEM Inc.

INDICATOR 10MM FIXED WH 24V SLDR

0

PCL2224V150B

PCL2224V150B

Visual Communications Company, LLC

PMI RND 22MM LED 24V SCREW BLOCK

0

6231201304F

6231201304F

Dialight

30MM FLTPMI GRN 6VDC W/TERM

90

1.74508.1112200

1.74508.1112200

RAFI

RAFIX 22 FS+ SIGNAL LAMP RD/GN 2

0

6781235232F

6781235232F

Dialight

8MM HG/G PMI-12VDC

36

5580302001F

5580302001F

Dialight

LED PANEL IND YLW DIFF SNAP-IN

226

FL1P-10QJ-1-Y2V

FL1P-10QJ-1-Y2V

Mallory Sonalert Products

LED YEL 10MM SNAP 2VAC/DC STK

5

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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