Ultra white 3 digit 0.56" 7 segment led display Common cathode for digital temperature indicator

Product Overview

Introducing the Ultra Bright White 0.56-Inch 3-Digit 7-Segment Common Cathode LED Display—a temperature-focused numeric solution engineered for digital temperature indicators, air conditioner controllers, and home appliance panels. Designed to prioritize clarity, energy efficiency, and reliable temperature readouts, this display excels at showing critical climate data: AC set temperatures (e.g., "26°C"), fridge/freezer temps (e.g., "5°C"/"-18°C"), or room thermostat values (e.g., "22.5°C").

Its 14.2mm (0.56-inch) digit height ensures exceptional readability from 1–3 meters (typical kitchen/living room distances), while the slim 37.6×19mm form factor fits seamlessly into standard temperature controller panels—no bulky redesigns required. The yellow segments on a grey surface create unique, eye-friendly contrast with ultra bright white light (100-120mcd), avoiding harsh glare in dim rooms (e.g., bedrooms) and resisting washout in bright spaces (e.g., sunlit kitchens).

With common cathode polarity, low power consumption (5-10mA/LED), and RoHS compliance, this display balances durability, user comfort, and eco-friendliness—ideal for 24/7 operation in temperature-sensitive devices.

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Key Features (Temperature Indicator-Optimized)

1. Superior Visibility for Temperature Readouts

Ultra Bright White Illumination (100-120mcd): High luminous intensity ensures temperature values stay clear in all lighting conditions—bright enough to cut through sunlight (e.g., living room AC panels) and soft enough for nighttime use (e.g., bedroom thermostats). The neutral white light (X/Y: 0.29-0.31) avoids color distortion, making decimal points (e.g., "23.5°C") and negative signs (e.g., "-18°C" for freezers) easy to distinguish.

Yellow Segments on Grey Surface: The yellow segment base paired with a grey background creates a milder, more natural contrast than traditional black surfaces—reduces eye strain during frequent temperature checks (e.g., adjusting AC temps multiple times a day) while still ensuring digits (0-9) stand out sharply.

Big Viewing Angle: Wide horizontal/vertical viewing angles (≥120°) ensure readability from off-center positions—perfect for shared spaces (e.g., a family room AC viewed from the couch or dining table) or tall fridge panels viewed from seated/standing heights.

2. Energy Efficiency for 24/7 Use

Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use for temperature controllers that run 24/7. For example, an AC controller using this display consumes ~0.05kWh per year—negligible compared to overall AC energy usage, while extending battery life for portable temperature monitors.

Optimized Forward Voltage (2.8-3.2V/LED): Compatible with standard 5V/12V power supplies used in AC, fridge, and thermostat controllers—no need for custom voltage converters. Seamlessly integrates with existing controller circuits, reducing manufacturing complexity.

Extremely Low Standby Current: Even when not actively updating temperatures (e.g., AC in idle mode), the display draws minimal power—critical for energy-efficient home appliances (e.g., ENERGY STAR-certified fridges) and battery-powered devices.

3. Reliable Performance & Easy Integration

Stable Operation in Temperature Fluctuations: Operates seamlessly in -10°C to 60°C (typical for heating/cooling environments)—from cold winter basements (heater use) to hot summer attics (AC use). Maintains consistent brightness and segment uniformity, no flickering during temperature updates (e.g., when AC cycles on/off).

Good Consistency: Laboratory-tested to ensure <3% brightness variation across segments and between units—critical for mass-produced temperature controllers (e.g., 1000+ ACs) where display consistency reinforces brand trust.

Common Cathode Polarity: Works with standard driver ICs (e.g., MAX7219, TM1638, HT1621) widely used in temperature indicators—simplifies circuit design for manufacturers and supports seamless integration with existing firmware (temp sampling, alert triggers).

Easy Assembly: Designed for PCB direct-mounting, compatible with automated production lines—speeds up manufacturing for high-volume temperature controllers and reduces labor costs.

4. Versatility & Compliance

Multi-Color Options: Beyond ultra bright white, available in 6 other high-performance colors to match functional needs or brand aesthetics:

Red: Alerts (e.g., "HIGH TEMP" for overheating).

Yellow Green/Pure Green: Signals "energy-saving mode" (e.g., eco-friendly ACs).

Blue: Modern aesthetic for premium controllers.

Amber/Orange: Warm tone for heating systems (e.g., space heaters).

RoHS Compliant: Free from lead, mercury, and harmful substances—safe for family-friendly home use and export to global markets (EU, North America, Asia), meeting consumer safety standards for temperature-sensitive appliances.

Technical Specifications

Applications

This display is purpose-built for temperature indicators and climate control devices, including:

Air Conditioner Controllers: Wall-mounted ACs (set temp "26°C" + room temp "24°C"), portable ACs (cooling mode temps), or smart AC remotes (energy-saving temp "28°C").

Temperature Controllers: Room thermostats (e.g., "22°C" for heating), fridge/freezer monitors (e.g., "5°C"/"-18°C"), or greenhouse climate regulators (e.g., "25°C" for plant growth).

Refrigerator Controllers: Mini fridges (e.g., "8°C" for drinks), commercial display cases (e.g., "2°C" for dairy), or chest freezers (e.g., "-20°C" for frozen goods).

Home Appliances: Smart water heaters (e.g., "60°C" for hot water), electric fireplaces (e.g., "23°C" heating temp), or space heaters (e.g., "25°C" set temp).

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Why Choose This Display for Temperature Indicators?

Temperature Readout Precision: Big digit height + clear decimal/negative sign support ensure accurate readings—avoids mistakes (e.g., setting AC to "36°C" instead of "26°C") that waste energy.

Eye-Friendly Design: Yellow segments on grey surface reduce strain during frequent checks, making it ideal for daily-use devices like ACs and thermostats.

Energy Efficiency: Low 5-10mA current cuts power use for 24/7 controllers, aligning with eco-friendly home appliance trends.

Easy Integration: Common cathode polarity + standard size fit existing temperature controller PCBs—saves manufacturers redesign time and cost.

Global Compliance: RoHS certification simplifies export to international markets, meeting safety standards for temperature-sensitive home electronics.

Order & Logistics Information

Minimum Order Quantity (MOQ): 300 pieces for standard ultra bright white models; 500 pieces for custom colors (red/blue/green, etc.).

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

Delivery Time: 5–7 days for standard orders; 10–12 days for custom color variants.

Transport: Express (FedEx/DHL for urgent prototype orders), Air (medium-volume shipments), Ocean (bulk production runs for AC/fridge manufacturers).

Contact Us

Our team specializes in LED displays for climate control systems, providing 24-hour support to help you optimize your temperature indicator's usability, reliability, and market appeal!