Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
75R-2212T Visual Communications Company, LLC	125V GRN NEON TERMINAL	10
Q16P1CXXY110E APEM Inc.	INDICATOR 110V 16MM PROM YELLOW	0
LP2-5-1-R Switch Components	LED INDICATOR 5MM-RED, SNAP-IN	0
UB06KW016B NKK Switches	INDICATOR RECT BLCK HSNG WHT LED	41
H16F-12G IndustrialeMart	HIGH LED 16MM FLAT 12VDC GREEN	51
QS121XXHR110 APEM Inc.	INDICATOR 12MM FIXED HI RED 110V	94
NL589C3R Bulgin	INDICATOR LIGHT NEON 230V RED	0
Q22F5AGXXSG12AE APEM Inc.	INDICATOR 12V 22MM FLUSH GREEN	44
Q6F3CXXW24E APEM Inc.	LED PANEL MOUNT INDICATOR WHT	0
Q10F5SXXSR02E APEM Inc.	LED PANEL INDICATOR RED 2V IP67	137
5590303007F Dialight	LED SNAP-IN PANEL 5MM 12V YLW	194
S08F-10G IndustrialeMart	HIGH LED 8MM FLAT 110V GRN IP67	40
Q8P1CXXHO24E APEM Inc.	8MM PRMNT CHRM HYPR ORG 24VDC	41
2150QA4 Visual Communications Company, LLC	LAMP NEON WHITE 120V PC MNT	64
Q8F1BXXB24E APEM Inc.	INDICATOR 24V 8MM FLUSH BLUE	288
M22N-BP-TWA-YB Omron Automation & Safety Services	LED PANEL INDICATOR YLW 12VAC/DC	10
Q22P1BXXB24E APEM Inc.	INDICATOR 24V 22MM PROMINENT BLU	0
6561409304F Dialight	LED 1/2" FLAT BLUE 230VAC TERM	18
32R-2311 Visual Communications Company, LLC	NEON PANEL INDICATOR 125V	0
P01-24-B-1A NKK Switches	INCAND PANEL INDICATOR 24V	38

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