Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display

Product Specification

Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control

Product Overview
Introducing the Ultra Bright White 12mm 2-Digit 7-Segment Common Cathode LED Display—a water heater-optimized numeric solution engineered for temperature controllers, home appliances, and compact digital indicators. Designed to prioritize clarity, heat resistance, and space efficiency, this 2-digit display excels at showing water heater temperatures (e.g., “45°C” for warm, “75°C” for hot) and other short-value metrics (e.g., “08” for appliance timer, “22” for room temp).
Its 12mm (0.47-inch) digit height ensures readability from 0.5–1.5 meters (typical distance for water heater control panels), while the 20.9×13.9×5.9mm form factor fits seamlessly into slim water heater enclosures—no bulky redesigns required. The yellow segments on a black surface create sharp contrast with ultra bright white light (120-140mcd), cutting through bathroom/utility room glare (e.g., overhead lights, steam fog) without eye strain.
With common cathode polarity, fast heat dissipation, and RoHS compliance, this display delivers reliable performance for 24/7 operation in water heaters (where heat and humidity are common) and other home appliances.

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Key Features (Water Heater Temperature Control-Optimized)
1. Superior Visibility for Water Heater Temps
Ultra Bright White Illumination (120-140mcd): Among the brightest in its class, it cuts through bathroom steam, utility room glare, or dim lighting—ensuring users can quickly check water temp (e.g., “50°C”) without squinting, even when the heater is mounted high on a wall.
Yellow Segments on Black Surface: The yellow segment base enhances contrast with the black background, eliminating “fuzzy” edges on digits (e.g., distinguishing “6” from “8”)—critical for avoiding scalds (e.g., mistaking “75°C” for “45°C”).
Wide Viewing Angle: Uniform light distribution ensures readability from off-center positions (e.g., glancing at the heater while filling a tub)—ideal for busy bathrooms or utility spaces.
2. Heat Resistance & Stable Performance
Fast Heat-Dissipation: Specialized design prevents heat buildup, even when the water heater runs at high temps (e.g., 80°C+) or is mounted near heating elements. Avoids brightness dimming or segment failure due to overheating.
Stable Operation in Humid/Hot Environments: Withstands temperature fluctuations (-10°C to 60°C, typical for bathrooms/utility rooms) and high humidity (steam from showers)—maintains consistent brightness, no flickering during temp updates.
Long Lifespan (50,000+ Hours): High-quality white LEDs and heat-resistant materials match the 8–10 year service life of most water heaters—eliminates frequent display replacements, reducing maintenance hassle for users.
3. Energy Efficiency & Easy Integration
Low Power Consumption (5-10mA/LED): Extremely low current draw minimizes energy use for water heaters (which run daily) and extends battery life for portable temperature indicators (e.g., handheld water temp meters).
Optimized Forward Voltage (2.8-3.2V/LED): Compatible with standard 5V/12V power supplies used in water heater controllers—no need for custom voltage converters, simplifying circuit design for manufacturers.
Common Cathode Polarity: Works with standard driver ICs (e.g., TM1637, HT1621) widely used in temperature controllers—integrates seamlessly with water heater firmware (e.g., temp sampling, heat-on/off triggers) without extra wiring.
Easy Assembly: Designed for PCB direct-mounting, compatible with automated production lines—speeds up water heater manufacturing and ensures consistent display alignment in control panels.
4. Versatility & Compliance
RoHS Compliant: Free from lead, mercury, and harmful substances—safe for home use (especially around water) and export to global markets (EU, North America, Asia), meeting water heater safety standards.
Multi-Scenario Use: Beyond water heaters, ideal for other 2-digit needs: small ovens (temp “200°C” → displays “20”), room thermostats (temp “25°C”), or coffee makers (brew temp “95°C”).

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Technical Specifications