Panel Indicators, Pilot Lights

Image	Part Number	Description / PDF	Quantity	Rfq
	1.69525.2541301 RAFI	SIGNAL LAMP RED LED	0
	3.14200.9020000 RAFI	RF 15 SIGNAL INDICATOR GN LENS W	0
	1.69507.1301002 RAFI	SIGNAL LAMP TRANSPARENT CLEAR	0
	1.02157.1101500 RAFI	LED PANEL INDICATOR GREEN 2.4V	0
	1.69507.1451402 RAFI	SIGNAL LAMP TRANSPARENT YELLOW	0
	1.69507.1371002 RAFI	NEON PNL INDICATOR RED 230V IP40	0
	5.00350.0131301 RAFI	INCAND NEON PANEL INDICATOR GRN	0
	1.69508.8341301 RAFI	LED PANEL INDICATOR RD 2.2V IP40	0
	1.69523.0231402 RAFI	SIGNAL LAMP TRANSPARENT YELLOW	0
	1.69523.0131301 RAFI	SIGNAL LAMP TRANSPARENT RED	0
	1.69525.2011301 RAFI	SIGNAL LAMP RED LED	0
	1.69507.1031301 RAFI	SIGNAL LAMP TRANSPARENT RED	0
	1.74508.0612500 RAFI	PANEL INDICATOR YELLOW IP65	0
	3.14002.9080000 RAFI	RF 19 SIGNAL INDICATOR 1/2 X 2-P	0
	1.69525.2111402 RAFI	SIGNAL LAMP YELLOW LED	0
	1.02157.1051300 RAFI	LED PANEL INDICATOR RED 2.4V	0
	3.14002.0510000 RAFI	RF 19 SIGNAL INDICATOR 1 X 1-PAR	0
	1.65124.3711306 RAFI	PANEL INDICATOR YELLOW IP65	0
	1.69508.8401503 RAFI	LED PANEL INDICATOR GREEN IP40	0
	1.69507.1431502 RAFI	SIGNAL LAMP TRANSPARENT GREEN	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