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.

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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 (-10°C to 60°C, typical for workshops) and minor vibrations (e.g., carrying the multimeter in a toolbox) - 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 (e.g., replacing a display mid-test) and lowers replacement costs.
4. Easy Integration & High-Volume Manufacturing
Common Cathode Polarity: Works with standard multimeter driver ICs (e.g., TM1638, HT1621, MAX7219) - simplifies circuit design for manufacturers and supports existing multimeter firmware (e.g., sensor data processing, unit labeling).
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 (EU, North America, Asia) and meets electrical equipment safety standards (e.g., IEC for multimeters).

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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.

Absolute Maximum Ratings(Ta=25ºC)

Code:Yellow Green- J

Code:Amber/Yellow -Y

Code:Orange -F 

Code:Super Bright Red -R

Code:Ultra Bright Red -UR

Code:Pure Green -G

Code:Ultra Bright Blue -BH

Code:Ultra Bright White -WH