Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
FL1P-8QJ-2-R12V Mallory Sonalert Products	LED RED 8MM SNAP 12VAC/DC STK	45
H08F-10B IndustrialeMart	HIGH LED 8MM FLAT 110V BLUE	45
Q22F5ABXXB28AE APEM Inc.	INDICATOR 28V 22MM FLUSH BLUE	34
FL1P-8QW-2-Y110V Mallory Sonalert Products	LED YEL 8MM SNAP 110VAC/DC STK	18
Q8F8BZZRYG02E APEM Inc.	PANEL MOUNT LED	627
E12R-10R IndustrialeMart	LED 12MM ROUND 110V RED IP67	40
SSI-LXR4815ID Lumex, Inc.	LED 5MM RED DIFF REFL PANEL MNT	2951
FL1P-12QW-2-R110V Mallory Sonalert Products	LED RED 12MM SNAP 110VAC/DC STK	6
Q16F1CXXY24E APEM Inc.	INDICATOR 24V 16MM FLUSH YELLOW	0
655-1109-103F Dialight	1/2"FLTSNAP RD230VAC W/LEADS	241
H16F-20G IndustrialeMart	HIGH LED 16MM FLAT 220V GREEN	60
FL1P-6QW-1-B12V Mallory Sonalert Products	LED BLU 6MM SNAP 12VAC/DC STK	4
Q14P1BXXHR24E APEM Inc.	PROM HYRED 12VAC IP67	11
Q10F5SXXSY02E APEM Inc.	LED PNL INDICATOR YELLOW 2V IP67	25
S08F-12W IndustrialeMart	HIGH LED 8MM FLAT 12V WHITE IP67	40
CCLB-1-3061-9920-I Visual Communications Company, LLC	SEALED LED INDICATOR WHITE	91
Q8R1CXXG110E APEM Inc.	INDICATOR 110V 8MM RECESSED GRN	2
6563204303F Dialight	LED 1/2" DOME GRN 24VDC LEAD	65
Q14F3CXXR24E APEM Inc.	LED PM INDICATOR FLUSH RED	142
Q14F1CXXY24E APEM Inc.	INDICATOR 24V 14MM 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