Panel Indicators, Pilot Lights

Part Number	Description / PDF	Quantity
Q6P1CXXY24 APEM Inc.	INDICATOR 24V 6MM PROMINENT YLW	1
Q14P1CXXB12E APEM Inc.	INDICATOR 12V 14MM PROMINENT BLU	6
6771215332F Dialight	7MM HG/G PMI-12VDC W/O-RING	0
M06P-03Y IndustrialeMart	LED 6MM PROTRUDE 3VDC YELLOW	69
6572703303F Dialight	LED 17.46MM YELLOW DIFF PNL MNT	0
TLM-87B-930-Q Floyd Bell, Inc.	PANEL MOUNT BLUE CONTINUOUS OUTP	1000
FL1P-16NJ-1-Y24V Mallory Sonalert Products	LED YEL 16MM NUT 24VAC/DC STK	20
PM3-PPGDW12.0 Califia Lighting (Bivar)	PNL MNT GREEN 20MA W/WIRE: 12"	0
FL1P-12QJ-1-Y2V Mallory Sonalert Products	LED YEL 12MM SNAP 2VAC/DC STK	18
LM2-8-1-G Switch Components	LED INDICATOR 8MM - GREEN, SCREW	497
Q8F1BXXY24E APEM Inc.	INDICATOR 24V 8MM FLUSH YELLOW	55
2620K1 Visual Communications Company, LLC	LAMP NEON RED 120V PC MNT	0
Q14F3BXXHG110E APEM Inc.	LED PMI FLUSH 110VAC GRN	2
Q22F1CXXW24E APEM Inc.	INDICATOR 24V 22MM FLUSH WHITE	0
Q8R1CXXR110E APEM Inc.	INDICATOR 110V 8MM RECESSED RED	0
QS103XXY24 APEM Inc.	INDICATOR 10MM FIXED YE 24V WIRE	0
6551104103F Dialight	LED PANEL INDICATOR RED 24V	770
Q6P7BXXW02E APEM Inc.	LED PM INDICATOR PROMINENT WHT	4
5580202007F Dialight	IND SNAP-IN PANEL MNT 565NM GRN	2071
1092QM6-28V Visual Communications Company, LLC	PMI RND .5" LED 28V TAB SMALL DO	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