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Customized Multicolour 4 Digit LED Display Module for kitchen hood control
Product Overview
Introducing the 0.47-Inch (12mm) 7-Segment Common Cathode LED Display—a versatile, appliance-optimized numeric solution designed for home electronic devices like kitchen hood controllers, air conditioners, and refrigerators. Built to balance clarity, energy efficiency, and durability, this display excels at showing core appliance metrics: fan speeds (e.g., "2" for medium), temperature settings (e.g., "25°C"), timer values (e.g., "10min"), or filter alerts (e.g., "CLN").
Its 0.47-inch (12mm) digit height ensures readability from typical kitchen/living room distances (1–2 meters), while the slim 92×18×11.5mm form factor fits seamlessly into compact control panels. The white segments on a black surface (protected by a scratch-resistant film) boost contrast, and the common cathode polarity simplifies integration with standard appliance driver ICs. Available in three high-visibility colors—blue (for modern aesthetics), red (for alerts), and yellow (for neutral readouts)—it adapts to both functional cues and brand design, with additional color options and OEM/ODM support for tailored needs.
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Key Color Variants & Technical Specs
This display is optimized for home appliance use, with three primary color options engineered for specific visibility and functional needs:
| Color | Wave | length | Luminous Intensity | Forward VoltageKey Use Case (Home Appliances) |
| Blue | 460-465nm | 80-100mcd | 2.8-3.3V | Kitchen hoods (fan speed, timer) – modern, high-contrast look cuts through kitchen glare. |
| Red | 620-625nm | 70-80mcd | 1.8-2.3V | Refrigerators (filter alerts, over-temperature warnings) – grabs attention for critical updates. |
| Yellow | 585-590nm | 60-70mcd | 1.8-2.3V | Air conditioners (room temperature, mode indicators) – eye-friendly for daily, prolonged use. |
| Category | Parameter | Specification |
| Basic Design | Display Type | 7-Segment LED Display (configurable for 1–4 digits for multi-metric use) |
| Polarity | Common Cathode | |
| Digit Height | 0.47 inches (12mm) | |
| Outer Dimensions (L×W×H) | 92 × 18 × 11.5mm | |
| Segment/Surface Finish | White 7-segment digits on Black Surface + scratch-resistant protective film | |
| Electrical | Forward Current | 5-10mA per LED (extremely low current for energy efficiency) |
| Quality | Core Features | Even light distribution, stable performance, long lifespan (50,000+ hours) |
| Mounting | Easy installation on PC boards and sockets | |
| Compliance | Certification | RoHS Directive-Compliant (free from lead/mercury – safe for home use) |
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Key Features (Home Appliance-Optimized)
1. Functional Color Coding for Usability
Color-Cued Communication: Red for alerts (e.g., fridge "OVERHEAT"), blue for standard metrics (e.g., hood "FAN 3"), and yellow for neutral data (e.g., AC "24°C")—eliminates user confusion and speeds up recognition of critical info.
Glare-Resistant Film: The scratch-resistant film on the black surface softens harsh kitchen/living room light (overhead lamps, sunlight) while protecting segments from spills, grease (in hoods), or frequent wiping (in fridges).
2. Energy Efficiency & Durability
Extremely Low Current (5-10mA/LED): Minimizes energy draw, aligning with energy-efficient appliance standards (e.g., ENERGY STAR) and reducing long-term electricity costs for users.
Stable Performance in Home Environments: Withstands temperature fluctuations (0°C–50°C, typical for kitchens/living rooms) and minor vibrations (e.g., hood fan operation, fridge door slamming)—no flickering or dimming over time.
Long Lifespan (50,000+ Hours): Matches the 8–10 year service life of most home appliances, so users rarely need to replace the display—enhancing customer satisfaction.
3. Easy Integration for Manufacturers
Common Cathode Polarity: Works with standard appliance driver ICs (e.g., TM1637, HT1621) used in hoods, ACs, and fridges—no custom circuit redesigns required, cutting development time.
Dual Mounting Options: Compatible with PC boards (for automated assembly) and sockets (for easy maintenance)—supports high-volume production and post-install repairs.
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Applications
This 7-segment display is tailored for home electronic appliances, with key uses including:
Kitchen Hood Controllers: Fan speed (e.g., "1/2/3"), auto-shutoff timer (e.g., "15min"), or filter cleaning alerts (e.g., "CLN").
Air Conditioner Controls: Room temperature (e.g., "24°C"), set temperature (e.g., "26°C"), or fan mode (e.g., "AUTO").
Refrigerator Indicators: Fridge/freezer temperature (e.g., "5°C"/"-18°C"), defrost cycle status (e.g., "DEF"), or door-open alerts (e.g., "OPEN").
Other Home Appliances: Microwaves (timer values), electric kettles (heat levels), or humidifiers (humidity percentages).
Customization & OEM/ODM Support
We offer tailored solutions to meet brand-specific needs:
Color Expansion: Beyond blue/red/yellow, choose from green, white, amber, orange, or multi-color (auto-switching) variants.
Digit Configuration: Adjust to 1–4 digits (e.g., 2 digits for "25°C," 4 digits for "01:30" timers).
Film Customization: Modify film density for enhanced glare reduction (e.g., thicker film for bright, sunlit kitchens).
Form Factor Tweaks: Adjust outer dimensions slightly to fit non-standard appliance control panels.
Why Choose This Display for Home Appliances?
Functional Color Coding: Red/blue/yellow options simplify user understanding—critical for appliances used daily by all household members.
Appliance-Sized Fit: 92×18×11.5mm dimensions fit compact control panels without compromising digit readability.
Energy & Cost Efficiency: Low current use reduces user electricity bills; durable design minimizes maintenance costs.
Easy Manufacturing: Common cathode polarity and dual mounting speed up production, supporting high-volume appliance lines.
Global Compliance: RoHS certification ensures adherence to international safety standards, simplifying export to global markets.
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