Custom  Ultra white / Ultra red  3-Digit 7 segment led display common anode for temperature control

Product Overview

Introducing our Ultra Bright 0.4-Inch (10.2mm) LED Display—a dual-color (white/red), common anode solution engineered for home appliances, refrigerator controllers, and temperature indicators. Designed to balance visibility, energy efficiency, and easy integration, this display excels at delivering clear, reliable readouts for daily use: fridge internal temperatures (e.g., "5°C"/"-18°C"), room thermostats (e.g., "23°C"), or appliance statuses (e.g., "01:30" for microwave timers).

Its 10.2mm (0.4-inch) digit height ensures readability from 1–2 meters (typical kitchen/living room distances), while the 44.7×34.6×8.5mm form factor fits seamlessly into standard appliance control panels—no bulky redesigns required. The two color options serve distinct functional needs: ultra bright white for neutral, eye-friendly daily readings (e.g., fridge temp), and ultra bright red for alerts or high-visibility needs (e.g., "HIGH TEMP" warnings).

With a common anode configuration, low power consumption (5-10mA recommended current), and RoHS compliance, this display combines durability, eco-friendliness, and performance—ideal for 24/7 operation in home appliances and temperature-sensitive devices.

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Key Features (Home Appliance & Temperature-Optimized)

1. Dual-Color Versatility for Functional Use Cases

The display's two ultra bright color options are tailored to specific appliance needs, ensuring clarity and intent:

2. Superior Visibility & Reliability

High Luminous Intensity: Both variants deliver bright, consistent light—white (80-100mcd) and red (70-90mcd) ensure readability in bright (sunlit kitchens) or dim (nighttime fridge checks) environments. No "washout" or dim segments, even under direct indoor light.

Stable Performance: Withstands temperature fluctuations (-10°C to 50°C, typical for home/appliance use) and minor vibrations (e.g., fridge compressor cycles, oven fan movement). Maintains uniform brightness and no flickering during value updates (critical for tracking temperature changes).

Long Lifespan (50,000+ Hours): High-quality LED chips match the 8–10 year service life of most home appliances (e.g., fridges, ovens, thermostats). Eliminates the need for frequent display replacements, reducing maintenance costs for users.

3. Energy Efficiency & Easy Integration

Low Power Consumption (5-10mA Recommended Current): Extremely low energy draw minimizes electricity use for 24/7-run appliances (e.g., fridge controllers) and extends battery life for portable temperature indicators. For example, a fridge display using 5mA consumes ~0.04kWh per year—negligible for household energy bills.

Common Anode Polarity: Compatible with standard driver ICs (e.g., TM1637, HT1621, MAX7219) widely used in home appliances. Simplifies circuit design for manufacturers and ensures backward compatibility with existing appliance firmware (e.g., temperature sampling, timer functions).

Easy Assembly: Designed for hassle-free PCB mounting, with a footprint that fits standard appliance control panels. Supports automated production (e.g., high-volume fridge manufacturing) and reduces labor costs for assembly.

4. Safety & Compliance

RoHS Compliant: Free from lead, mercury, and other harmful substances—meets global environmental standards. Safe for use in family-friendly home appliances (e.g., children's room thermostats) and export to markets like the EU, North America, and Asia.

Low Heat Emission: Efficient power use minimizes heat generation, preventing overheating in compact appliance panels (e.g., slim fridge controllers) and reducing thermal stress on adjacent components (e.g., temperature sensors).

Technical Specifications

Applications

This display is purpose-built for home appliances and temperature-sensitive devices, including:

Refrigerator Controllers: Showing fridge/freezer temperatures (e.g., "5°C"/"-18°C") with ultra bright white, or alerts (e.g., "DOOR OPEN") with ultra bright red.

Home Appliances: Microwaves (cook time/temp: "02:00"/"180°C"), ovens (preheat status: "200°C"), or coffee makers (brewing temp: "95°C").

Temperature Indicators: Room thermostats (e.g., "23°C"), portable space heater monitors (e.g., "750W"/"1500W"), or window AC controllers (e.g., "26°C").

Instrument Panels: Small home electronics (e.g., battery chargers: "90% charge"), smart home hubs (e.g., "ROOM 22°C"), or humidifiers (e.g., "55% RH").

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Why Choose This LED Display for Home Appliances?

Functional Color Cues: White for daily readability, red for alerts—eliminates ambiguity (e.g., users instantly recognize red as a warning, white as normal).

Appliance-Friendly Size: 44.7×34.6×8.5mm dimensions fit standard control panels—no need to resize fridges, microwaves, or thermostats.

Energy & Cost Efficient: Low 5-10mA current cuts electricity use; long lifespan reduces replacement costs for users.

Easy Manufacturing: Common anode polarity works with standard ICs, streamlining production for appliance manufacturers.

Global Safety: RoHS compliance ensures use in international markets, aligning with consumer safety standards.

Order & Logistics Information

Minimum Order Quantity (MOQ): 300 pieces per color variant (white/red); 500 pieces for mixed-color orders.

Packing: Anti-static EPE + carton (each display is individually wrapped to protect pins and segments during shipping).

Delivery Time: 5–7 days for standard orders; 10–12 days for custom modifications (e.g., adjusted brightness).

Transport: Express (FedEx/DHL for urgent samples), Air (medium-volume shipments), Ocean (bulk production runs for appliance manufacturers).

Contact Us

Our team specializes in LED displays for home electronics, providing 24-hour support to help you optimize your appliance's usability, reliability, and market appeal!