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Multicolour 3 Row 4 Digit 7 Segment LED Display 11mm common anode for Electrical multimeter Panel
Product Overview
Light-Bo's Multicolor 3-Row 4-Digit 7-Segment LED Display is a specialized numeric solution engineered for electrical multimeters and instrument panels requiring simultaneous multi-parameter readouts. Designed to prioritize clarity, space efficiency, and functional color coding, this display excels at showing diverse electrical metrics: voltage (e.g., "220V"), current (e.g., "0.8A"), frequency (e.g., "50Hz"), or resistance (e.g., "100Ω")-all on separate rows for instant distinction.
Its 11mm (0.43-inch) digit height ensures readability from 0.5-2 meters (typical distance for multimeter operation), while the 50×60×9mm form factor fits standard multimeter panels-no bulky redesigns required. The yellow segments on a black surface boost contrast with ultra bright multicolor light (white/red/yellow/pure green, etc.), cutting through workshop glare or dim enclosures without eye strain.
As a common cathode display, it integrates seamlessly with standard multimeter driver ICs, supports automated assembly, and meets RoHS compliance. Backed by low power use, long lifespan, and Light-Bo's 20,000 pcs/day production capacity, it delivers reliable performance for high-volume multimeter manufacturing.
Main Image
Key Features (Electrical Multimeter-Optimized)
1. 3-Row 4-Digit Design for Multi-Parameter Readouts
Simultaneous Metric Display: 3 independent rows let multimeters show 3 critical parameters at once (e.g., voltage, current, frequency) - eliminates manual mode switching and speeds up electrical testing (e.g., troubleshooting circuits).
Row-Specific Color Coding: Assign distinct colors to each row for intuitive recognition:
White: Voltage (e.g., "220V") - neutral, easy to track for primary metrics.
Red: Current (e.g., "0.5A") - signals caution for high-current readings.
Pure Green: Frequency (e.g., "50Hz") - indicates stable "normal" values.
4-Digit Precision: Each row supports 4 digits, enabling fine measurements (e.g., "0.025A" for low current, "12.50V" for precise voltage) - critical for professional electrical testing.
2. Superior Visibility for Workshop Use
Ultra Bright Multicolor Illumination: High luminous intensity ensures clarity in harsh workshop conditions (e.g., overhead lights, sunlight through windows) - no squinting at small digits during field repairs or lab testing.
Yellow Segments on Black Surface: The yellow segment base enhances contrast with the black background, eliminating "fuzzy" edges on digits (e.g., distinguishing "0" from "8" in low light) - avoids measurement errors that could damage circuits.
Wide Viewing Angle: Uniform light distribution across segments ensures readability from off-center positions (e.g., holding the multimeter at an angle to a circuit) - ideal for hands-on electrical work.
3. Low Power & Reliable Performance
Low Power Requirement (5-10mA/LED): Extremely low current draw minimizes energy use, extending battery life for portable multimeters (critical for field technicians working away from power outlets).
Stable Operation in Electrical Environments: Withstands voltage fluctuations and minor vibrations - maintains brightness, no flickering during value updates.
Long Lifespan (50,000+ Hours): High-quality LEDs match the 8-10 year service life of most multimeters - reduces maintenance downtime and lowers replacement costs.
4. Easy Integration & High-Volume Manufacturing
Common Cathode Polarity: Works with standard multimeter driver ICs - simplifies circuit design for manufacturers and supports existing multimeter firmware.
Easy Assembly: Compatible with PCB mounting and automated pick-and-place lines - aligns with Light-Bo's 20,000 pcs/day production capacity, ensuring fast delivery for high-volume multimeter orders.
RoHS Compliant: Free from lead, mercury, and harmful substances - safe for global markets and meets electrical equipment safety standards.
Technical Specifications
| Category | Parameter | Specification |
| Basic Design | Display Type | 3-Row 4-Digit 7-Segment LED Display |
| Polarity | Common Cathode | |
| Digit Height | 11mm (0.43 inch) | |
| Outer Dimensions (L×W×H) | 50 × 60 × 9mm | |
| Segment/Surface Finish | Yellow segments on Black Surface | |
| Optical Performance | Core Emitting Colors | Ultra bright white, red, yellow, pure green |
| Optional Colors | Ultra bright blue, yellow green, amber, orange | |
| Forward Voltage | 2.8-3.2V per LED; 1.8-2.2V | |
| Electrical Parameters | Forward Current | 5-10mA per LED |
| Power Consumption | Low | |
| Quality & Compliance | Core Advantages | High luminous intensity, stable performance, IC compatible, long lifespan |
| Compliance | RoHS Compliant |
| Order & Logistics | Information (Light-Bo)Logistics DetailSpecification |
| Brand Name | Light-Bo |
| Minimum Order Quantity (MOQ) | 1000 pieces |
| Trade Term | EXW - flexible for buyer's shipping arrangements |
| Production Capacity | 20,000 pieces per day - supports high-volume multimeter manufacturing |
| Packing | EPE + Cartons - secure protection against transit damage |
| Delivery Time | 10-15 days for standard orders (white/red/yellow/green) |
| Transport Options | Ocean, Air , Land |
| Origin | Guangdong, China (Mainland) |
Applications
This display is purpose-built for electrical testing and instrument panels, including:
Electrical Multimeters: Showing voltage (V), current (A), frequency (Hz), resistance (Ω) on 3 separate rows.
Instrument Panels: Industrial power monitors (e.g., "380V" 3-phase voltage, "50Hz" frequency, "10A" load current).
Home Appliance Testers: Checking appliance voltage ("220V"), power ("0.8kW"), and current ("3.6A").
Digital Indicators: Multi-parameter sensors (e.g., temperature + humidity + pressure on separate rows).
Why Choose Light-Bo's 3-Row Display for Multimeters?
Multi-Parameter Efficiency: 3 rows eliminate mode switching, speeding up electrical testing for technicians.
Intuitive Color Coding: Row-specific colors reduce metric confusion (e.g., red for current = caution) - critical for safety.
High-Volume Support: 20,000 pcs/day capacity meets large multimeter manufacturer demands, with fast 5-7 day delivery.
Battery-Friendly: Low power use extends portable multimeter life - ideal for fieldwork.
Global Compliance: RoHS certification ensures export to key markets, aligning with electrical equipment standards.
Product Parameters
Absolute Maximum Ratings(Ta=25ºC)
| Parameter | Symbol | Ratings | Unit |
| Forward Current(per dice) | Ipm | 20 | mA |
| Reverse Voltage(per dice) | Vr | 5 | V |
| Power Dissipation(per dice) | Pm | 80 | mW |
| Operating Temperature Range | Topr | -40~+85 | ºC |
| Storage Temperature Range | Tstg | -40~+85 | ºC |
| Solder Temperature(≤3 seconds) | Th | 260 | ºC |
Code:Yellow Green- J
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.4 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 30 | 40 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 569 | 574 | nm |
Code:Amber/Yellow -Y
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.5 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 60 | 80 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 585 | 595 | nm |
Code:Orange -F
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.4 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 60 | 80 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 600 | 605 | nm |
Code:Super Bright Red -R
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 50 | 60 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 630 | 635 | nm |
Code:Ultra Bright Red -UR
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 1.8 | 2.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 80 | 100 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 625 | 635 | nm |
Code:Pure Green -G
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.6 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 180 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 515 | 525 | nm |
Code:Ultra Bright Blue -BH
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.8 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 140 | mcd | |
| Spectrum With Of Half Value | △λ | If=10mA | 20 | nm | ||
| Wavelength | Dλ | If=10mA | 460 | 465 | nm |
Code:Ultra Bright White -WH
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
| Forward Voltage | Vf | If=10mA | 2.8 | 3.2 | V | |
| Reverse Voltage | Vr | Ir=10uA | 5 | V | ||
| Luminous Intensty | Iv | If=10mA | 120 | 140 | mcd | |
| LED color Temperature | K | If=10mA | 5500 | 20 | 6800 | K |
Chromaticity Coordinates | X/Y | If=10mA | 0.29,0.32 | 0.30,0.33 | nm |
Shenzhen Guangzhibao Technology Co., Ltd. (Brand: Light-Bo) stablished in 2006 , A company that integrates R & D, manufacturing and sales of optoelectronics LED Displays . ISO 9001 2015 Quality Management Systems certified company . With more than 15 years OEM and ODM experience .
Light Bo has been committed to provide high quality and low cost customized solutions to help customers reduce cost and enhance competitiveness.
Products Applications
7 Segment LED Display, Customized LED Display, Numeric LED Display, Dot matrix LED Display, widely used for home appliances,tempearture indicators, humidity indicators, refrigerator controller,thernostats indicator,heating and cooling control and so on.
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FAQ
FAQ(Frequently Asked Questions)
Q1 Are you trading company or manufacturer?
A: We are original manufacturer with more than 20 years experience in optoelectronic LED displays .
Q2 What is your main products?
A: Our main products include 7 Segment LED display, SMD LED Display,Dot matrix LED Display, Arrow LED display, Custom Design LED Display ,LED light bar,Through hole led, SMD LEDs,LED Backlights, and so on .
Q3 What is your MOQ?
A: Our MOQ is 1000 pcs , We can also accept sample orders and small orders with quantity less than our MOQ .
Q4 Before placing order, Can I get some samples for test?
A: Yes. We can provide 5-10 free samples for your testing, but the freight cost will be borne by the customer.
Q5 How long is your delivery time?
A: Delivery time: About 10-20 days; According to order quantity and raw materials. If you have urgent order,and we have raw materials in stock,we can adjust our production plan to make it ready within 7-10 days .
Q6 What is your terms of payment?
A: We accept bank transfer,T/T,Western Union and Paypal with small amount. Detailes of payment methods can be negotiatble.
Q7 Can you quote me FOB prices?
A: Yes. We can quote you prices based on incoterms EXW, FOB, CIF,DDP.
Q8 How can I get your catalogue and price list?
A: Yes . Please let us know your email address or contact us from website directly for our catalogue and price list .
Q9 Can I negotiate the prices?
A: Yes, we may consider discounts for bulk orders.
Q10 How much will the shipping charges be?
A: It depends on the size of your shipment and the method of shipping.We will offer the charge to you as you requested.
Q11 Can you do custom design products?
A: Yes , OEM&ODM service are available .We can customize the sizes,led color and functional icons according to your requirements.
Q12 If I send my design , can you make it for myself only ,and will not show it to any one else?
A: Yes , we will not show it or sell to others without your authorization.
Q13 What will be the samples lead time for customized products?
A: Samples lead time will be about 20-25 working days after receiving mold cost and mold drawing approval from customers .
Q14 What is the shipping methods?
A:We usually ship the goods by DHL, FEDEX,UPS,EMS,BY AIR,BY SEA etc, also you can choose the other way that best for you.
Q15 How do you ensure the quality of your products?
A: we are ISO 9001 QMS ceritified manufacturers with more than 20 years experience ,We conduct twice 100% percent test for all of our products before shipment .
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