Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
FL1P-10NJ-4-Y2V Mallory Sonalert Products	LED YEL 10MM NUT 2VAC/DC STK	70
1030QD1 Visual Communications Company, LLC	NEON IND LIGHT 125V RED QC	1792
2191QL1-24V Visual Communications Company, LLC	LED IND LIGHT 24V RED	80
5561703314F Dialight	LED 1" YEL PMI 12V CLR FLAT LEN	0
FL1P-6QW-2-Y2V Mallory Sonalert Products	LED YEL 6MM SNAP 2VAC/DC STK	16
6051111110F Dialight	LED PNL IND 5MM RED PROTRUDING	0
FL1P-10NW-1-R24V Mallory Sonalert Products	LED RED 10MM NUT 24VAC/DC STK	6
44-NKR12H-CRO Visual Communications Company, LLC	PMI .250" LED 12V TAB CLEAR RED	25
S18LGXRPQP Banner Engineering	S18 EZ-LIGHT - 18 MM - IP67T	2
6803435134F Dialight	10MM HB/B PMI-12VDC	173
Q12P1BXXG110E APEM Inc.	INDICATOR 110V 12MM PROM GREEN	211
1033QD5 Visual Communications Company, LLC	NEON IND GRN LITE PANEL MNT QC	0
PM5-A5G28V Califia Lighting (Bivar)	PANEL MOUNT ASSEM 6.35MM GREEN	9
Q8P1BXXR110E APEM Inc.	INDICATOR 110V 8MM PROMINENT RED	540
PM5-A20B110V Califia Lighting (Bivar)	PANEL MOUNT ASSEM 25.4MM BLUE	0
CNX718N90028W Visual Communications Company, LLC	LED 18MM WHITE 28V WIRE PNL MNT	0
AP22M-2Q4S IDEC	LED PANEL INDICATOR BLU 24V IP66	0
PM5-A20G24V Califia Lighting (Bivar)	PANEL MOUNT ASSEM 25.4MM GREEN	0
1051C3 Visual Communications Company, LLC	INDICATOR NEON AMBER PANEL MNT	170
FL1M-8CW-4-G24V Mallory Sonalert Products	LED GRN 8MM NUT 24VDC STK	16

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