Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
6571704103F Dialight	LED 17.46MM YELLOW DIFF PNL MNT	0
6792322333F Dialight	LED PANEL INDCATOR ORANGE 12V	110
5591301802F Dialight	LED PANEL GRN DIFF SNAP-IN	0
5561503314F Dialight	LED 1" RED PMI 12V CLR FLAT LEN	15
Q8F1BXXY110E APEM Inc.	INDICATOR 110V 8MM FLUSH YELLOW	0
LBW7MP-1T04G IDEC	LBW FLUSH PILOT 24V GREEN	0
CNX_480_1_RTP_12 Visual Communications Company, LLC	PNLMNT INDCTR BLK ANDZD ALUM RED	383
H12F-03Y IndustrialeMart	HIGH LED 12MM FLAT 3VDC YELLOW	49
CNX714C400FVW Visual Communications Company, LLC	IND TUFFLED FLEXVOLT 14MM YELLOW	233
101843009203 Dialight	LED BASE SUBMINI PANEL INDICATOR	0
2191L7-24V Visual Communications Company, LLC	LED IND LIGHT 24V YELLOW	0
Q8R1BXXB24E APEM Inc.	INDICATOR 24V 8MM RECESSED BLU	0
6563352304F Dialight	LED PNL IND ORG 5V IP67/NEMA 4X	7
S22L2SRGB14Q Banner Engineering	S22 PRO EZ LIGHT INDICATOR MULTI	99
S18DLYXXP Banner Engineering	S18 DAYLIGHT VISIBLE EZ-LIGHT -	2
1051A3 Visual Communications Company, LLC	INDICATOR NEON AMBER PANEL MNT	33
QS123XXHG220 APEM Inc.	INDICATOR 12MM FIXED HI GRN 220V	275
CDLB-0-2701-9923-I Visual Communications Company, LLC	LONG BODY PMI RND .230" LED 28V	85
1092M1-125VAC Visual Communications Company, LLC	LED PANEL INDICATOR RED 125V	0
44W-NKG120-CGO Visual Communications Company, LLC	PMI .250" LED 120V WIRE CLEAR GR	72

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