Key Takeaways
- Product Identity: Professional metal indicator light engineered with high-brightness LED luminescent sources for clear visual status feedback.
- Key Specification: Operates efficiently at a rated current of ≤20 mA with low power consumption of approximately 0.2 W.
- Material Construction: Built with durable copper alloy or black-plated zinc-aluminum alloy shells and stainless steel lock washers.
- Voltage Range: Versatile electrical configuration supporting 3V–480V DC/AC operations tailored to specific customer requirements.
- Protection Rating: IP65 and IP67 ingress protection ratings ensure dust-tight performance and resistance to temporary water immersion.
- Mounting Options: Available in standard mounting hole sizes ranging from 6mm to 30mm to fit various industrial panel specifications.
- Wiring Methods: Configured with either reliable pin terminals or pre-installed PVC lead wires for secure electrical connections.
- Target Applications: Widely utilized in CNC machinery, industrial automation control cabinets, EV charging stations, and marine systems.
- Customization: Extensive OEM and ODM capabilities allow customized wire lengths, dual-color configurations, and specialized housing materials.
- Certification Standards: Manufactured under ISO9001 quality systems with compliance options supporting global market requirements.
- Selection Consideration: Review operating voltage, panel thickness, and environmental exposure before final component procurement.
- Ordering Support: Bulk wholesale purchasing backed by direct engineering assistance from FILN manufacturing facilities.
What Is a Metal Indicator Light with Wires?
A metal indicator light with wires is an electromechanical signaling device utilized on control panels, machinery dashboards, and electrical distribution boxes to communicate operational status visually. Its primary function is to alert operators regarding machine power states, fault conditions, or cycle completion through high-brightness LED illumination. Structurally, these components consist of a durable metal outer shell, an internal current-limiting resistor, a high-brightness LED core, an O-ring seal, and pre-attached wire leads that eliminate the need for separate terminal soldering during assembly.
The industrial value of a metal indicator light lies in its mechanical rigidity, superior thermal dissipation, and resistance to physical impacts compared to conventional plastic alternatives. The operating principle relies on passing a controlled electrical current across the internal semiconductor LED chip, producing stable photon emission visible through a polycarbonate lens. Typical applications span heavy industrial automation, switchgear panels, transportation consoles, and commercial appliances.
FILN offers a diverse selection of industrial indicator lights categorized into metal and plastic variants, with mounting dimensions ranging from 6mm to 30mm. Regarding electrical termination, users can select between standard pin terminals and direct wire-lead configurations. Metal indicator lights feature three distinctive exterior head styles—flat head, raised/convex head, and recessed head—allowing engineers to match aesthetic and functional workspace requirements.
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Product Overview
The FILN metal indicator light with wires is engineered as a frontline signaling component for modern electrical architectures. It operates by converting electrical voltage into focused optical illumination via a solid-state semiconductor diode protected inside a rugged metallic enclosure. Mechanically, the unit relies on a threaded barrel design secured by a stainless steel lock washer and tightened with a copper alloy hex nut, ensuring high retention force against continuous equipment vibration.
The electrical principle is governed by an internal carbon film or integrated resistor that steps down and stabilizes operational voltage across the LED chip, safeguarding the circuit against minor voltage fluctuations. Main industrial applications include CNC machinery fault panels, electrical distribution switchboards, and marine monitoring consoles. Key industrial advantages include long operational lifespans exceeding 50,000 hours, high ingress protection ratings, and robust resistance to mechanical shock and oil splash.
Manufactured under strict quality control standards, these indicator lights utilize premium raw materials such as flame-retardant PA66 lamp holders and optical-grade polycarbonate lenses. Compliance with international electrical testing parameters guarantees stable operation across diverse thermal and environmental conditions, making them an essential specification choice for global equipment manufacturers.
Quick Specifications
| Technical Parameter |
Specification Details |
| Product Description |
Metal indicator light with integrated wires |
| Indicator Light Model |
FILN Industrial Series (Configuration Dependent) |
| Mounting Hole Size |
Available in 6mm to 30mm (0.24 inches to 1.18 inches) |
| Operating Voltage |
3V – 480V DC/AC (Customizable) |
| LED Color Options |
Red, Green, Yellow/Amber, Blue, White, Dual-Color, Tri-Color |
| Waterproof Rating |
IP65 / IP67 rated ingress protection |
| Wiring Type |
Pin terminal or pre-attached wire lead |
| Head Type |
Flat head, standard round head, or recessed head |
| Surface Quality |
Smooth and flat exterior without burrs, oxidation, cracks, or visible manufacturing defects. |
| Assembly Requirements |
Head and base assemblies are securely fitted to prevent rotation, detachment, tilt, or structural deformation. |
Performance Parameters
The electrical, mechanical, and environmental performance ratings of FILN metal indicator lights are rigorously tested to ensure long-term stability in demanding industrial environments.
| Performance Metric |
Rated Value / Operational Parameter |
| Rated Operating Voltage |
3V – 480V DC/AC (Customizable per customer specifications) |
| AC Frequency |
50/60 Hz |
| Rated Operating Current |
≤ 20 mA |
| Rated Power Consumption |
Approx. 0.2 W |
| Insulation Resistance |
≥ 100 MΩ (Tested at 500V DC applied between lead wires and housing) |
| Dielectric Strength / Voltage Proof |
1500V – 1800V AC, with no electrical breakdown or flashover |
| Operating Life |
50,000 to 100,000 hours of continuous operational service |
| Ingress Protection Rating |
IP65 / IP67 dustproof and waterproof specification |
Component Materials
Each component of the FILN metal indicator light is selected for optimal mechanical strength, electrical conductivity, and environmental resistance.
| Accessory Name |
Material Composition |
Engineering Purpose |
| Shell |
Copper alloy / Black-plated zinc-aluminum alloy |
Provides mechanical housing rigidity and corrosion resistance. |
| Lamp Holder |
PA66 (Polyamide 66) |
Ensures high thermal stability and electrical insulation. |
| Lampshade / Lens |
PC (Polycarbonate) |
Delivers high optical clarity and impact resistance. |
| Luminescent Source |
High-brightness LED semiconductor chip |
Generates efficient, long-lasting visual illumination. |
| Resistor |
Carbon film resistor |
Regulates electrical current flow to protect the LED. |
| Wire / Lead Wire |
PVC insulated copper wire |
Facilitates secure electrical connection and flexibility. |
| Nut |
Copper alloy |
Secures the indicator firmly to control panels. |
| O-Ring |
Silicone / Silica gel |
Forms a tight waterproof and dustproof panel seal. |
| Lock Washer / Gasket |
Stainless steel |
Prevents loosening under heavy mechanical vibration. |
Environmental Performance
This specification governs the general use range for the FILN metal indicator light series, ensuring reliable operation under extreme thermal and humidity conditions.
| Environmental Test Parameter |
Testing Standard / Condition |
| Application Scope |
General use range for Metal Indicator Light series. |
| Operating & Storage Temperature |
-40°C ~ +80°C |
| Operating Relative Humidity |
≤ 85% at +40°C |
| High Temperature Test |
96 hours exposed at 80 ± 2°C |
| Low Temperature Test |
96 hours exposed 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 Specification
The integrated LED semiconductor chip is characterized by strict absolute maximum ratings and electro-optical performance criteria to guarantee stable luminous output.
| Parameter Category |
Test Condition / Operating Limit |
| Maximum Forward Current (IFP) |
20 mA (Maximum safe operating limit) |
| Reverse Voltage (VR) |
5 V (Maximum limit) |
| Power Dissipation (PD) |
60 mW |
| Operating Temperature (TOPR) |
-40°C ~ +80°C |
| Storage Temperature (TSTG) |
-40°C ~ +100°C |
| Lead-Free Soldering Temperature (TSOL) |
Max. 260°C for 3 sec. Max. |
| Forward Voltage (VF) |
Test IF = 20 mA: 2.8 V (Min.) ~ 3.2 V (Max.) |
| Reverse Current (IR) |
Test VR = 5 V: 5 μA (Max.) |
| Viewing Angle (2θ1/2) |
Test IF = 20 mA: Typical Value 60° |
| Luminous Intensity (Iv) |
Test IF = 20 mA: 500 mcd (Min.) ~ 800 mcd (Max.) |
| Dominant Wavelength (λd) |
Test IF = 20 mA: 520 nm ~ 525 nm (Green reference) |
| Junction Temperature (Tj) |
Maximum 125°C at IF = 20 mA |
| Thermal Resistance (RJP) |
Typical Value 8°C/W at IF = 20 mA |
Standard Test Conditions
Unless otherwise specified, all electrical and optical parameters are measured under strict standard atmospheric conditions to ensure measurement repeatability and accuracy.
- Ambient Temperature: 5°C ~ 35°C
- Relative Humidity: 45% ~ 85%
- Air Pressure: 86 ~ 106 kPa (860 ~ 1060 mbar)
- Calibration Standard: Luminous intensity and dominant wavelength are calibrated in accordance with the CIE international standard of human eye response curve.
- Measurement Tolerances: Tolerance of luminous intensity measurement is ±15%, and voltage measurement tolerance is ±0.1V.
Applications by Industry
Metal indicator lights utilize high-strength copper alloy or stainless steel metal shells, providing outstanding impact resistance and IP67 waterproof and dustproof protection. They are widely deployed across industrial and high-end commercial sectors.
While plastic indicator lights are prone to aging, cracking, and high-temperature deformation over prolonged use, metal indicator lights are engineered to withstand rigorous operating conditions, frequent manipulation, and high-reliability requirements. Typical industrial applications include:
1. Industrial Automation & Machinery Manufacturing
This sector represents the largest and most critical application domain. Production workshops often experience continuous mechanical vibration, oil contamination, and hard-object impacts.
- CNC Machine Tools & Machining Centers: Control panels are fitted with red, green, and yellow metal indicators where green signifies normal operation, yellow denotes standby or warning, and red indicates emergency stop or equipment fault. The metal shell resists cutting fluids and metal debris.
- Automation Production Line Control Cabinets: Large distribution cabinets and PLC control panels utilize 6mm and 8mm metal indicators compatible with AC220V and DC24V to display power circuit status.
- Hydraulic & Pneumatic Equipment: Deployed for oil pump start/stop and pressure overload warnings. Because equipment vibration is severe, pre-wired integrated metal indicators secure internal LEDs and resistors firmly, avoiding wire breakage or loosening common in pin-terminal units.
2. Outdoor Power & New Energy Distribution Systems
Outdoor installations endure prolonged sunlight, rain, and extreme temperature fluctuations, demanding exceptional weather resistance and sealing performance.
- EV Charging Stations: Outdoor DC and AC charging piles are equipped with flat-head metal status indicators. Blue or green flashing lights denote active charging, steady lights indicate completion, and red flashing signals ground faults. IP67 waterproofing and vandal resistance support high-frequency public usage.
- Outdoor Distribution & Photovoltaic Combiner Boxes: Solar energy plants and municipal outdoor distribution boxes use indicators to display high-voltage closing and inverter operations across -40°C to 80°C environments.
3. Rail Transit, Engineering Vehicles & Marine Equipment
Vehicles and marine vessels experience heavy shocks and vibrations, while maritime environments present severe salt-spray corrosion challenges.
- Engineering Vehicle Dashboards: Excavators, cranes, and bulldozers utilize dashboard indicators for oil pressure, water temperature, headlights, and braking faults under heavy dust and shock conditions.
- Marine & Port Control Equipment: Ship cabin instruments and deck control boxes use electroplated stainless steel metal indicators to resist salt-spray corrosion, aided by silicone O-rings that prevent seawater ingress.
4. Commercial Self-Service & Public Anti-Vandal Facilities
Public equipment is vulnerable to impacts and tampering, where plastic lamps easily break.
- Vending & Ticketing Machines: Paired with metal anti-vandal pushbuttons to indicate coin insertion, dispensing, and change status.
- Gas Station Fuel Dispensers: Hazardous fuel zones require strict electrical isolation, which metal housings achieve effectively to enhance operational safety.
- Residential Intercom Panels: Stainless steel access control panels feature red and green indicators to signify door lock status.
5. Medical Equipment & Food Processing Machinery
These industries require frequent high-pressure washing and sterilization, demanding strict waterproof and sanitary standards.
- Food Filling & Packaging Equipment: Daily washdowns with high-pressure hot water and chemical detergents require IP67 metal indicators that resist chemical corrosion.
- Medical Sterilization Equipment: High-temperature autoclaves use indicator lights to differentiate heating, sterilization, and exhaust cycles.
LED Indicator Color Meanings and Application Guide
Indicator light colors provide instant visual communication regarding equipment status on industrial control panels. Understanding standard color allocations ensures safe operation and rapid troubleshooting.
- Red: Typically denotes emergency stop, fault conditions, hazard alerts, or abnormal system pressures. Common in safety shut-off switches.
- Green: Indicates normal operation, system running state, safe conditions, or power-on confirmation.
- Yellow / Amber: Represents caution, standby mode, pre-warning states, or abnormal temperature warnings requiring operator attention.
- Blue: Frequently used for specific operational modes, neutral status confirmation, or auxiliary function activation.
- White: Generally utilized for general power supply indication, normal lighting status, or neutral system feedback where red, green, or yellow are not applicable.
Note: Indicator-light color conventions can vary by equipment manufacturer, control-system design, industry standard, country, and application. FILN offers single-color, dual-color, and tri-color indicator configurations to accommodate complex status requirements.
| Color |
Common Meaning |
Typical Status |
Typical Application |
Recommended Environment |
| Red |
Danger / Stop |
Emergency / Fault |
Emergency stop panels |
Industrial control consoles |
| Green |
Normal / Safe |
Running / Active |
Machine start status |
Standard workshop floors |
| Yellow |
Caution / Warning |
Standby / Pre-alert |
Overload monitoring |
Distribution enclosures |
| Blue |
Mandatory Action |
Auxiliary Mode |
EV charging indicators |
Outdoor charging piles |
| White |
Neutral / Power |
Power ON |
Main circuit panels |
Indoor electrical cabinets |
Installation Guide
Proper installation ensures mechanical stability and maintains the IP67 waterproof integrity of FILN metal indicator lights.
- Required Tools: Prepare a drill or hole punch, Caliper, Spanner/Wrench matching the nut size, wire strippers, and electrical insulating tape or heat-shrink tubing.
- Mounting Preparation: Measure the mounting panel thickness to ensure it falls within the acceptable range for the specific indicator model.
- Mounting Hole Requirements: Drill a clean mounting hole matching the specified diameter (e.g., 8mm, 12mm, 16mm, 22mm) with no burrs or sharp edges that could damage the housing.
- Product Orientation: Ensure the waterproof silicone O-ring is correctly positioned on the front barrel of the indicator before inserting it through the panel hole.
- Installation Steps: Insert the indicator through the front of the panel. From the rear, slide on the stainless steel lock washer and thread the copper alloy hex nut onto the barrel.
- Securing the Unit: Tighten the hex nut securely using a spanner to compress the silicone O-ring against the panel, preventing rotation and liquid ingress. Do not over-torque.
- Wiring Preparation: Strip the wire insulation appropriately. If using pre-wired models, prepare the wire ends for connection.
- Electrical Connection: Connect the leads to the power source matching the rated voltage (AC or DC). Observe correct polarity if applicable.
- Waterproof Sealing Requirements: For outdoor installations, ensure wire connections are protected within junction boxes or sealed with heat-shrink tubing.
- Inspection After Installation: Verify mechanical rigidity, check that the indicator does not wobble, and test electrical functionality by energizing the circuit.
Wiring Guide
Understanding proper wiring techniques is vital for safe and reliable indicator light operation.
Pin-terminal indicators require connection via crimp receptacles or direct soldering. Users must slide insulating tubing over soldered pin joints to prevent accidental short circuits against metal control panels.
Direct wire-lead indicators feature factory-attached PVC cables. These can be linked to the main circuit using quick-link connectors, soldered securely, or wrapped properly with electrical tape to ensure joint stability.
Safety Warning: Before performing any electrical wiring or maintenance, always cut off the main power supply and verify zero voltage to prevent electrical shock hazards.
Industry Knowledge Center
Industrial indicator lights serve as critical human-machine interface elements. Operating on low-power semiconductor technology, they provide high-visibility status updates while consuming minimal energy (typically ~0.2W).
Selecting robust metallic housings over standard plastics matters significantly in environments subject to ultraviolet degradation, chemical washdowns, and continuous mechanical vibration. Compliance with international standards such as ISO9001 and IP67 rating benchmarks ensures that components perform reliably across demanding industrial applications.
Maintenance involves periodic inspection of terminal connections and sealing gaskets. If a faint glowing phenomenon (phantom illumination) occurs in AC/DC low-voltage LED indicators due to leakage current from solid-state control outputs, adding a bleeder resistor in parallel can successfully resolve the issue.
Buyer Decision Guide & RFQ Checklist
Choosing the correct metal indicator light requires evaluating physical and electrical parameters against your specific operating environment.
Specification-to-Decision Framework
- Mounting Hole: Determines physical panel compatibility. Confirm exact millimeter sizing (e.g., 8mm, 12mm, 16mm, 22mm) prior to cutting panels.
- Voltage: Determines electrical compatibility. Verify whether your system operates on 12V, 24V, 110V, 220V, or 380V AC/DC.
- IP Rating: Determines environmental suitability. Choose IP67 for outdoor or washdown areas, and IP65 for standard indoor cabinets.
- Material Selection: FILN offers nickel-plated brass, stainless steel, and zinc-aluminum alloy shells.
| Material |
Advantages |
Disadvantages / Limitations |
| Nickel-Plated Brass |
Cost-effective, good mechanical strength, easy to machine. |
Moderate corrosion resistance in harsh saline environments. |
| Stainless Steel |
Superior corrosion resistance, high aesthetic appeal, extreme durability. |
Higher raw material and manufacturing cost. |
| Zinc-Aluminum Alloy |
Lightweight, excellent die-casting flexibility, durable black-plated finishes. |
Less impact-resistant than solid stainless steel. |
RFQ Checklist for Buyers
Providing these specifications helps FILN engineering and sales teams confirm product compatibility and quotation requirements efficiently:
- Product Type & Model
- Mounting Hole Size (mm)
- Operating Voltage & AC/DC type
- LED Color (Red, Green, Yellow, Blue, White, etc.)
- Head Type (Flat, Round, Recessed)
- Housing Material (Brass, Stainless Steel, Zinc Alloy)
- Waterproof Requirement (IP65 / IP67)
- Wiring Method (Pin terminals or wire leads with length)
- Quantity & Packaging Requirements
- Target Market & Certification Requirements
FILN Manufacturing and Engineering Capabilities
FILN maintains robust manufacturing and engineering capabilities designed to support global B2B buyers, original equipment manufacturers (OEMs), and automation system integrators.
- R&D and Engineering Support: Dedicated professional engineers provide technical communication, custom circuit designs, and rapid prototyping solutions for specialized industrial applications.
- OEM & ODM Customization: Comprehensive flexibility in custom wire harnesses, specialized shell finishes, tailored voltages, and customized laser marking.
- Production & Assembly: Advanced automated production lines and skilled assembly teams ensure consistent quality across small-batch orders and large-scale mass production.
- Testing & Quality Control: An independent testing laboratory executes rigorous electrical, dielectric, thermal, and waterproof ingress testing under strict ISO9001 quality management protocols.
- Global Export & Certification Support: Certified products meeting international safety standards (UL, CE, RoHS, REACH, TUV, CB) exported reliably to over 100 countries worldwide.
Factory Direct Supply
Factory Introduction: 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 m² 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, CE, RoHS, REACH, TUV, CB) are widely used in kitchen appliances, energy storage, EV charging, automotive, marine, and security systems.
Production Capabilities: Indicator lights, pushbutton switches, rocker switches, toggle switches, and other small electrical components, supporting a wide array of customized manufacturing solutions.
Quality System: Certified under ISO9001, CE, VDE, RoHS, SGS, UL, IP65, and TUV standards.
Export Markets: Global distribution across North America, Europe, Asia-Pacific, and international markets.
Manufacturing Advantages: Professional engineering support teams dedicated to solving custom application challenges and delivering reliable technical solutions.
Website Link: www.filn.com
Email Link: inquiry@cnylin.com.cn
Frequently Asked Questions
Find direct answers to common technical, installation, and procurement questions regarding FILN metal indicator lights.
Q1: How to prevent phantom illumination (faint glowing) in 12V LED indicators?
Phantom illumination can occur in low-voltage LED indicators when residual leakage current from solid-state PLC outputs or Triac switches passes through the circuit. This can be successfully resolved by installing a suitable bleeder resistor in parallel across the indicator terminals to drain off stray leakage current.
Q2: Can this IP67 indicator light be washed down with caustic chemicals?
Yes. FILN IP67 metal indicator lights constructed with stainless steel shells and silicone O-ring seals resist high-pressure water jets and standard industrial chemical washdowns commonly used in food processing and medical machinery.
Q3: What mounting hole sizes are available for FILN metal indicator lights?
FILN offers standard metal indicator lights in a wide range of mounting hole diameters, including 6mm, 8mm, 10mm, 12mm, 16mm, 19mm, 22mm, and 30mm to fit diverse industrial control panel designs.
Q4: Are custom wire lengths and connector types available for bulk orders?
Yes. FILN provides extensive OEM and ODM customization services, allowing buyers to specify exact wire lengths, wire gauges, specialized terminal connectors, and dual-color LED configurations.
Q5: What is the expected operational lifespan of the LED luminescent source?
The high-brightness LED semiconductor source utilized in FILN indicator lights is rated for a continuous operating lifespan between 50,000 and 100,000 hours under standard electrical parameters.
Q6: Do these indicator lights support both AC and DC power supplies?
Yes. FILN offers versatile voltage configurations spanning 3V to 480V in both AC and DC options, with built-in internal resistors matching the requested voltage specification.
Q7: What material is best for high-corrosion marine environments?
For marine, coastal, or high-salt environments, stainless steel housing is strongly recommended due to its exceptional resistance to chloride and chemical corrosion compared to standard nickel-plated brass.
Q8: How do I request custom samples before placing a bulk wholesale order?
You can directly contact FILN engineering and sales via email at inquiry@cnylin.com.cn or visit www.filn.com to discuss sample availability, technical specifications, and project requirements.
