Key Takeaways for Procurement & Engineering
- Product Identity: FILN 14mm panel indicator lamp (Model: FL1M-14FW-1) featuring a flat head design for flush control panel integration.
- Electrical Flexibility: Compatible with versatile operating voltages ranging from 3V to 220V DC/AC with custom voltage options available upon request.
- Material Durability: Robust copper alloy or zinc-aluminum shell construction offering superior impact resistance compared to standard plastic alternatives.
- Ingress Protection: Rated IP67 waterproof and dustproof when installed correctly with the supplied silicone O-ring and stainless steel plum blossom gasket.
- Wiring Configuration: 2PIN direct wire lead configuration ensuring secure electrical connection and simplified assembly in tight enclosures.
- Illumination Options: High-brightness LED configurations available in Red, Green, Yellow, Blue, White, as well as dual-color and tri-color variants.
- Manufacturing Standards: Produced under strict ISO9001 quality management systems with international certifications including CE, VDE, RoHS, CCC, and UL (Certificate Number: E498776).
- Mounting Mechanism: Standard 14mm mounting hole diameter utilizing a single-nut thread mounting method for quick and secure panel installation.
- Application Versatility: Widely deployed across industrial machinery, electrical power distribution cabinets, new energy systems, and automotive retrofitting.
- Factory Direct Support: Backed by FILN engineering teams supporting OEM/ODM customization, bulk wholesale orders, and rapid sample prototyping.
What is a Panel Indicator Lamp?
A panel indicator lamp is an essential electrical signaling device installed on control panels, switchboards, and machinery to visually communicate operational status, power conditions, or alarm states to operators. FILN manufactures a comprehensive selection of industrial indicator lights categorized into metal and plastic variants, covering mounting sizes from 6mm to 30mm. Depending on assembly requirements, these units are available in pin-terminal types or direct wire-lead configurations.
Specifically, metal indicator lights are manufactured with three distinct head profiles—flat head, convex head, and concave head—allowing engineers to match specific aesthetic and ergonomic requirements for their control interfaces. The model FL1M-14FW-1 utilizes a flat head profile, delivering a clean, flush appearance on industrial enclosures while offering maximum physical protection against accidental impacts.
Product Overview & Engineering Principles
The FILN 14mm panel indicator lamp is engineered to function as a direct visual interface for complex electrical circuits. Operating on fundamental semiconductor lighting principles, the integrated high-brightness LED converts electrical energy into luminous signals with high efficiency and minimal thermal output. Internal carbon film resistors regulate the current flow, ensuring stable operation across a broad voltage range from 3V to 220V AC/DC.
Mechanically, the assembly relies on a precision-machined copper alloy or zinc-aluminum outer shell that houses the optical components. A silicone O-ring compressed by a stainless steel plum blossom gasket creates a hermetic seal against the mounting panel, achieving an IP67 rating that prevents moisture and dust ingress. This robust construction makes the panel indicator lamp suitable for vibration-heavy industrial machinery, power distribution boards, and harsh outdoor environments where standard plastic indicators fail prematurely.
Quick Specifications
| Product Description |
Metal Indicator Light with Wires |
| Model Number |
FL1M-14FW-1 |
| Mounting Hole Size |
14mm (0.551 inches) |
| Operating Voltage |
3V – 220V DC/AC (Customizable) |
| LED Color Options |
Red, Green, Yellow, Blue, White, Dual-Color, Tri-Color |
| Waterproof Rating |
IP65 / IP67 (Configuration dependent) |
| Wiring Type |
2PIN Direct Wire Lead Type |
| Head Feature |
Flat Head |
| Surface Quality |
Smooth, flat finish, burr-free, oxidation-free, and crack-free. |
| Assembly Standard |
Head and base components securely seated; zero rotation, detachment, skew, or deformation. |
Performance Parameters
| Rated Operating Voltage |
3V – 240V DC/AC (Customizable per client specification) |
| AC Frequency |
50Hz ~ 60Hz |
| Rated Operating Current |
≤ 20mA |
| Rated Power |
Approximately 0.2W |
| Insulation Resistance |
≥ 100MΩ (Tested between wire and shell at DC 500V) |
| Dielectric Strength |
1500V ~ 1800V AC, with no breakdown or flashover |
| Working Life |
50,000 ~ 100,000 hours |
| Waterproof Rating |
IP65/67 |
Component Materials & Engineering Purpose
Every material utilized in the construction of the FILN panel indicator lamp is selected to ensure structural integrity, electrical safety, and long-term environmental resistance.
| Accessory Name |
Material |
Engineering Purpose |
| Shell |
Copper Alloy / Zinc-Aluminum Alloy (Black Plated) |
Provides mechanical rigidity, impact resistance, and electromagnetic shielding. |
| Lamp Holder |
PA66 |
Offers high thermal stability and excellent electrical insulation properties. |
| Lampshade |
Polycarbonate (PC) |
Ensures high optical light transmission and impact resistance against shattering. |
| Luminescent Source |
High-Brightness LED |
Delivers energy-efficient, long-lasting visual signal output. |
| Resistance |
Carbon Film Resistance |
Regulates operating current to protect the internal LED diode across various voltages. |
| Wireway |
PVC |
Provides flexible, insulated electrical conduction for 2PIN direct wiring. |
| Nut |
Copper Alloy |
Ensures secure, vibration-resistant thread locking onto mounting panels. |
| O-ring |
Silica Gel |
Maintains a resilient waterproof seal under extreme temperature fluctuations. |
| Plum Blossom Gasket |
Stainless Steel |
Distributes fastening pressure evenly and prevents loosening under heavy vibration. |
Environmental Performance Specifications
This specification outlines the general operational envelope for the metal indicator light series under rigorous environmental testing conditions.
| Application Scope |
General operational range for metal indicator light series. |
| Part Name |
Metal Indicator Light (Model: FL1M-14FW-1) |
| Operating & Storage Temperature |
-40°C ~ +80°C |
| Operating Relative Humidity |
≤ 85% at +40°C |
| High Temperature Test |
96 hours at 80±2°C |
| Low Temperature Test |
96 hours at -40±2°C |
| Constant Temperature & Humidity Test |
96 hours at 40±2°C, 90% ~ 95% RH |
| Temperature Cycling Test |
Alternate between -40°C (30 min) and 85°C (30 min), 5 cycles total. |
LED Technical Specifications
To maintain rigorous engineering standards, the internal optical emitter parameters are categorized into absolute maximum ratings and electro-optical characteristics.
1. Absolute Maximum Rating
| Max. Forward Current (IFP) |
20 mA |
| Reverse Voltage (VR) |
5 V |
| Power Dissipation (PD) |
60 mW |
| Operating Temperature (TOPR) |
-40°C ~ +80°C |
| Storage Temperature (TSTG) |
-40°C ~ +100°C |
| Lead Soldering Temperature (TSOL) |
Max. 260°C for 3 sec. max. |
2. Electro-Optical Characteristics (Ta = 25°C)
| Parameter |
Test Condition |
Specification Range / Value |
| Forward Voltage (VF) |
IF = 20mA |
2.8V (Min.) ~ 3.2V (Max.) |
| Reverse Current (IR) |
VR = 5V |
5 μA (Max.) |
| Viewing Angle (2θ1/2) |
IF = 20mA |
60° (Typical) |
| Luminous Intensity |
IF = 20mA |
500 mcd (Min.) ~ 800 mcd (Max.) |
| Recommended Forward Current (IF) |
– |
20 mA (Typical) |
| Dominant Wavelength |
IF = 20mA |
520 nm ~ 525 nm (for green variant) |
| Junction Temperature (Tj) |
IF = 20mA |
125°C (Max.) |
| Thermal Resistance (RJP) |
IF = 20mA |
8 °C/W (Typical) |
Standard Test Conditions
Unless otherwise specified, all electrical and optical parameters are measured under the following standard atmospheric conditions:
- Ambient Temperature: 5°C ~ 35°C
- Relative Humidity: 45% ~ 85%
- Air Pressure: 86 ~ 106 kPa (860 ~ 1060 mbar)
Technical Notes: Luminous intensity and dominant wavelength are calibrated in accordance with the CIE international standard of human eye response curve. Tolerance of luminous intensity measurement is ±15%, and voltage measurement tolerance is ±0.1V.
Applications by Industry
The metal indicator light employs a high-strength copper alloy or stainless steel metal shell, delivering exceptional impact resistance and an IP67 waterproof/dustproof rating suitable for demanding industrial and high-end commercial sectors.
While conventional plastic indicators are prone to aging, cracking, and high-temperature deformation over prolonged use, metal indicators are engineered to withstand harsh operating conditions, frequent activation, and rigorous reliability requirements. Typical industry applications include:
1. Industrial Automation & Mechanical Manufacturing
This sector represents the primary application area where continuous mechanical vibration, cutting oils, and physical impacts are prevalent.
- CNC Machine Tools & Machining Centers: Control panels utilize red, yellow, and green metal indicator lamps where green indicates normal operation, yellow signifies standby or warning, and red denotes emergency stop or system failure. The metal shell resists cutting fluids and metallic debris.
- Automation Production Line Control Cabinets: Heavy-duty distribution boards and PLC enclosures mount 14mm panel indicator lamps operating on AC 220V or DC 24V to provide clear visual feedback on power status.
- Hydraulic & Pneumatic Equipment: Applied for oil pump start/stop monitoring and pressure limit alerts. The integrated wire-lead structure ensures internal connections remain secure against severe mechanical vibration compared to vulnerable pin-type terminals.
2. Outdoor Power & Renewable Energy Distribution Systems
Outdoor installations face constant exposure to sunlight, precipitation, and extreme thermal fluctuations.
- EV Charging Stations: Outdoor DC and AC charging pedestals feature flat head metal status indicators where flashing blue/green indicates charging, solid illumination shows completion, and flashing red warns of leakage or grounding faults. IP67 sealing prevents weather ingress and vandalism.
- Outdoor Distribution Boxes & PV Combiner Boxes: Photovoltaic plants and municipal outdoor cabinets use these lamps to indicate high-voltage closure and inverter status across operating temperatures from -40°C to 80°C.
3. Rail Transit, Commercial Vehicles & Marine Equipment
Vehicles and marine vessels endure continuous vibration and corrosive high-salinity environments.
- Engineering Vehicle Consoles: Instrument dashboards on excavators, cranes, and bulldozers utilize indicators for oil pressure, water temperature, lighting, and braking fault warnings.
- Marine & Port Control Equipment: Shipboard instrumentation and deck control boxes use stainless steel and plated metal indicators to resist salt spray corrosion, supported by silicone O-rings preventing seawater infiltration.
4. Commercial Self-Service & Public Security Facilities
Public equipment requires high durability against accidental impacts and vandalism.
- Vending & Ticketing Machines: Paired with anti-vandal metal pushbuttons to signal coin insertion, dispensing, and change status.
- Gas Station Fuel Dispensers: Meets explosion-proof safety demarcation requirements with metallic housings ensuring proper electrical isolation.
- Residential Access Control & Intercoms: Stainless steel access panels feature red and green panel indicator lamps to display lock status.
5. Medical Equipment & Food Processing Machinery
These industries demand frequent high-pressure washdowns and chemical sterilization.
- Food Filling & Packaging Equipment: Subjected daily to high-pressure hot water and chemical cleaning agents; IP67 metal indicators withstand spray jets without internal component corrosion.
- Medical Sterilization Autoclaves: High-temperature sterilization equipment utilizes signal lights to distinguish heating, sterilization, and exhaust phases.
LED Indicator Color Meanings and Application Guide
Indicator light colors convey critical operational states across industrial equipment. Understanding standard color conventions ensures proper operator response and system safety.
- Red: Typically indicates danger, emergency stop, fault conditions, or abnormal system status. Recommended for emergency shutdown panels and alarm circuits.
- Green: Signifies normal operation, system ready, power ON, or safe conditions. Widely used on main power distribution boards and running indicators.
- Yellow / Amber: Denotes caution, warning, standby mode, or abnormal temperature/pressure thresholds before reaching critical failure limits.
- Blue: Used for general information, specific operational modes, cooling status, or active DC power confirmation. Frequently utilized in EV charging stations.
- White: Serves as a neutral indication for general power availability, lighting circuits, or auxiliary system activation where specific color coding is not mandated.
| Color |
Common Meaning |
Typical Status |
Typical Application |
| Red |
Danger / Emergency |
Fault / Stop |
Emergency stop buttons, fault alarms |
| Green |
Safe / Normal |
Running / ON |
Main power ON, motor running status |
| Yellow |
Caution / Warning |
Standby / Alert |
Temperature warning, standby mode |
| Blue |
Mandatory Action / Info |
Active / Charging |
EV chargers, DC circuit confirmation |
| White |
Neutral / Auxiliary |
Power Available |
Control box illumination, auxiliary status |
Note: Indicator light color conventions may vary depending on equipment manufacturer specifications, control system design standards, regional regulations, and specific application requirements. FILN offers single-color, dual-color, and tri-color configurations to accommodate complex status signaling needs.
Installation Guide
Proper mechanical and electrical installation ensures optimal performance and preserves the IP67 waterproof rating of your panel indicator lamp.
- Prepare Tools: Gather a calibrated panel hole punch or drill, wire strippers, crimping tools or soldering iron, and a torque wrench if applicable.
- Mounting Preparation: Measure and mark the exact panel location. Ensure the mounting surface is clean, flat, and free of burrs or oil residues.
- Create Mounting Hole: Drill or punch a precise 14mm diameter hole into the control panel according to the FL1M-14FW-1 specification.
- Position O-Ring: Place the supplied silicone waterproof O-ring onto the threaded body of the indicator light to ensure a tight seal against the panel face.
- Insert Product: Insert the indicator lamp from the front side of the panel through the 14mm mounting hole.
- Secure Fastening: Thread the stainless steel plum blossom gasket and metal locking nut onto the rear housing. Tighten securely by hand, followed by a light turn with a tool to achieve proper compression without overtightening.
- Electrical Preparation: Strip approximately 5mm to 8mm of insulation from the 2PIN wire leads, ensuring no stray copper strands are exposed.
- Make Connections: Connect the wire leads to the power source following the correct polarity for DC applications or standard wiring for AC circuits. Utilize quick-connect terminals, solder, or insulated electrical tape to secure connections.
- Post-Installation Inspection: Verify that the indicator is firmly seated with zero rotation or looseness, and test electrical continuity before applying full operating voltage.

Wiring Methods and Safety Guidelines
Understanding proper wiring techniques is critical for maintaining electrical safety and connection stability in industrial environments. FILN provides indicators with both pin terminals and direct wire leads.
Pin-Type vs. Wire-Lead Indicators: Pin-type indicators require mating receptacles or soldered wire connections directly to the base pins, making them suitable for modular plug-in assemblies. Conversely, direct wire-lead indicators (such as the FL1M-14FW-1) come equipped with integrated PVC wires, eliminating internal terminal fatigue and providing superior resistance against continuous mechanical vibration.
Wiring Connection Best Practices: Direct wire-lead indicators can be connected to the main circuit using quick-connection terminals, secured with solder, or wrapped securely with rated electrical tape to ensure long-term stability and prevent accidental short circuits.
CRITICAL SAFETY WARNING: Always ensure electrical safety compliance by completely cutting off power to the control panel before performing any wiring, inspection, or maintenance operations.
Industry Knowledge Center
Selecting and maintaining industrial signaling components requires adherence to engineering best practices. Panel indicator lamps operate by converting electrical input into visible light signals to inform operators of system conditions. Quality matters because premature indicator failure in critical applications—such as emergency stop circuits or high-voltage power distribution—can lead to undetected faults, operational downtime, or severe safety hazards.
Industrial standards dictate strict compliance with voltage isolation, ingress protection (IP ratings), and flammability ratings (such as UL and CE certifications). When selecting an indicator, engineers must match operating voltages precisely and account for environmental stressors like ambient temperature and chemical exposure. Routine maintenance includes inspecting wiring terminals for signs of corrosion or looseness and verifying optical output integrity across scheduled facility audits.
Buyer Decision Guide & RFQ Checklist
Evaluating technical specifications correctly ensures seamless integration into your product lines or control panels. Below is a specification-to-decision framework to guide your selection process:
Specification-to-Decision Framework
- Mounting Hole Size (e.g., 14mm): Determines physical panel compatibility. Ensure your panel punch matches the exact millimeter dimension.
- Operating Voltage (3V to 220V): Determines electrical compatibility. Select matching AC or DC voltage ratings to prevent LED burnout or dim illumination.
- LED Color: Determines status indication logic according to industrial safety color standards.
- IP Rating (IP67): Determines environmental suitability. Choose higher IP ratings for washdown, outdoor, or dusty manufacturing environments.
- Material Selection: FILN offers nickel-plated brass, stainless steel, and zinc-aluminum alloy shells. See the material comparison table below.
- Wiring Method: Choose between pin terminals and pre-wired leads based on assembly speed and vibration requirements.
- Certifications: Verify that required standards (UL, CE, RoHS) align with your target export markets and end-application compliance rules.
Metal Shell Material Comparison
| Material Option |
Advantages |
Typical Environment |
| Nickel-Plated Brass |
Cost-effective, good mechanical strength, corrosion-resistant finish. |
Standard industrial control cabinets and indoor machinery. |
| Stainless Steel |
Superior corrosion resistance, high aesthetic finish, extreme durability. |
Marine environments, food processing, medical equipment. |
| Zinc-Aluminum Alloy |
Lightweight, robust casting properties, excellent black-plated finish. |
Automation equipment, commercial appliances, automotive panels. |
Procurement RFQ Checklist
When submitting a request for quotation (RFQ) to FILN, providing complete specifications accelerates the engineering review process:
- Product Type & Model (e.g., FL1M-14FW-1)
- Mounting Hole Size (14mm)
- Voltage & Current Type (AC/DC, Voltage value)
- LED Color & Configuration (Single, Dual, Tri-color)
- Head Type & Material Preference
- Waterproof Requirement & Wiring Method
- Wire Length & Connector Requirements
- Target Certifications (UL, CE, RoHS, etc.)
- Order Quantity & Packaging Requirements
- OEM/ODM Customization or Logo Marking Needs
- Target Market & Application Environment
Providing these detailed specifications helps FILN engineering and sales teams confirm product compatibility and quotation requirements more efficiently. Contact FILN engineering today or explore more 14mm metal indicator light options.
FILN Manufacturing and Engineering Capabilities
As a dedicated electrical component manufacturer, FILN maintains advanced R&D and production capabilities designed to support B2B procurement managers and equipment manufacturers worldwide. Our internal testing laboratories and automated assembly lines ensure strict adherence to international quality standards.
FILN provides comprehensive OEM and ODM custom manufacturing services, accommodating specialized voltage requirements, custom wire harnesses, laser-etched symbols, and tailored packaging. Our experienced engineering team collaborates directly with clients to resolve complex design challenges, offering rapid sample prototyping, small-batch flexibility, and stable mass-production scaling.
Factory Direct Supply & Global Reach
Yueqing Yulin Electronic Co., Ltd. (brand name FILN), located in Wenzhou, Zhejiang, was established in 2006 as a professional electrical switch manufacturer integrating R&D, production, and sales. Its premium FILN brand products are sold in over 100 countries. FILN operates a modern 10,000 square meter facility with 20+ advanced production lines and an independent testing lab. Driven by scientific processes and the ISO9001 quality system, FILN ensures industry-leading innovation and electrical performance. Our certified products (UL Certificate Number: E498776, CE, RoHS, REACH, TUV, CB, VDE) are widely used in kitchen appliances, energy storage, EV charging, automotive, marine, and security systems.
Production Capabilities: Specialized manufacturing of indicator lights, push button switches, rocker switches, toggle switches, and other small electrical components with full custom production support.
Quality System: Certified under ISO9001, CE, VDE, RoHS, SGS, UL (E498776), IP65/IP67, and TUV standards.
Export Markets: Global distribution spanning the United States, Canada, Germany, United Kingdom, Australia, and over 100 countries worldwide.
Manufacturing Advantages: Professional engineer-to-engineer technical alignment, specializing in custom solution development for complex industrial applications.
Official Resources: Visit our official website at www.filn.com or contact our sales and engineering team directly at inquiry@cnylin.com.cn for prompt quotations and technical documentation.
Frequently Asked Questions
How to prevent phantom illumination (faint glowing) in 12V LED indicators?
Phantom illumination or faint glowing in 12V LED indicators is typically caused by leakage current from solid-state outputs, PLCs, or long cable capacitance in the control circuit. To resolve this, install an appropriate bleeder resistor or anti-interference shunt resistor parallel to the indicator input terminals to drain residual leakage current.
Can this IP67 indicator light be washed down with caustic chemicals?
Yes, the FL1M-14FW-1 indicator features a stainless steel or plated copper alloy shell and a sealed silicone O-ring designed to withstand routine chemical washdowns in food processing and medical environments. However, direct exposure to highly concentrated industrial acids or prolonged immersion in corrosive solvents should be avoided.
What is the difference between pin-terminal and wire-lead indicator models?
Pin-terminal indicators feature exposed solder lugs that require plug-in receptacles or manual soldering, making them ideal for modular circuit boards. Wire-lead indicators come pre-attached with 20cm PVC wires, offering superior vibration resistance and faster installation in enclosed control cabinets.
Does FILN support custom operating voltages for this 14mm indicator?
Yes, FILN offers flexible manufacturing support for custom operating voltages ranging from low DC levels (3V, 5V, 12V, 24V) up to standard AC power requirements (110V, 220V, 240V) to match your specific application circuit.
What mounting panel thickness is compatible with the FL1M-14FW-1?
The threaded metal body and locking nut are engineered to accommodate standard industrial control panels ranging from 1mm to 6mm in thickness while maintaining secure mechanical fastening.
Are UL certifications available for export compliance?
Yes, FILN holds official UL certification for its indicator light series under Certificate Number E498776, ensuring full regulatory compliance for equipment exported to North American and international markets.
How do I achieve the IP67 waterproof rating during installation?
To achieve IP67 ingress protection, ensure that the provided silicone O-ring is seated correctly between the indicator head flange and the front of the mounting panel, and tighten the rear locking nut securely.
Can I request custom wire lengths and pre-installed connectors?
FILN provides OEM customization services allowing buyers to specify custom wire lengths, stripped ends, or specialized terminal connectors to streamline assembly on your production line.