Low Current Pure Green 20.32mm (0.8-Inch) 3-Digit 7-Segment Common
Cathode LED Display for Temperature Controllers
Product Overview
Introducing the Low Current Pure Green 3-Digit 7-Segment Common
Cathode LED Display-a high-visibility, energy-saving solution
engineered for temperature controllers, instrument panels, and home
appliances. Designed to prioritize large-digit readability,
ultra-low power use, and stable performance, this 3-digit display
excels at showing temperature metrics: room thermostats (e.g.,
"22°C"), industrial process temps (e.g., "150°C"), or freezer
monitors (e.g., "-18°C").
Its 20.32mm (0.8-inch) digit height ensures exceptional readability
from 1-3 meters (typical for wall-mounted controllers or large
appliance panels), making it ideal for users who need to check
temps from a distance. The pure green light (515-525nm) offers a
eye-friendly, distinct glow that stands out without glare, while
the low current design minimizes energy consumption-critical for
battery-powered or energy-efficient temperature devices.
With common cathode polarity, RoHS certification, and easy mounting
options, this display balances durability, usability, and
compliance-perfect for 24/7 operation in temperature-sensitive
applications.
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Key Features (Temperature Controller-Optimized)
1. Large-Digit Visibility for Clear Temp Readouts
20.32mm (0.8-Inch) Big Digits: Among the larger 3-digit displays in its category, it's highly
readable from across rooms (e.g., living room thermostats) or
factory floors (industrial controllers). No squinting to
distinguish "8" from "0" or decimal points (e.g.,
"24.5°C")-critical for accurate temp monitoring.
Pure Green Illumination (515-525nm, 120-140mcd): Pure green light is gentle on the eyes during prolonged viewing
(e.g., office thermostats) and highly distinguishable in bright
environments (e.g., sunlight through kitchen windows). It avoids
the harshness of red or the glare of white, making it ideal for
daily-use temperature controllers.
Big Viewing Angle: Uniform light distribution ensures readability from off-center
positions (e.g., glancing at a wall controller while cooking)-no
need to stand directly in front to check temps.
2. Low Current & Energy Efficiency
Extremely Low Current Operation: Engineered for minimal power draw (paired with low power
consumption), it extends battery life for portable temperature
indicators (e.g., handheld fridge thermometers) by up to 40%
compared to standard displays. For plugged-in devices (e.g., smart
thermostats), it cuts long-term electricity costs.
Optimized Forward Voltage (2.8-3.3V/LED): Compatible with standard 5V/12V power supplies used in most
temperature controllers-no need for custom voltage converters,
simplifying circuit design and reducing power waste.
3. Stable Performance & Easy Integration
Wide Environmental Adaptability: Withstands temperature fluctuations (-10°C to 60°C, typical for
indoor/outdoor use) and minor vibrations (e.g., appliance movement,
controller handling)-maintains consistent brightness and color, no
flickering during temp updates (e.g., when AC cycles on/off).
Dual Mounting Options: Easy to mount on PC boards (for automated mass production) or
sockets (for manual replacement/maintenance)-flexible for
high-volume home appliances (e.g., large ovens) and custom
industrial controllers.
IC Compatibility: Works with standard temperature controller driver ICs (e.g.,
TM1637, HT1621, MAX7219)-seamlessly integrates with temp-sensing
firmware (e.g., real-time sampling, high/low temp alerts) without
extra wiring.
4. Durability & Compliance
Long Lifetime (50,000+ Hours): High-quality pure green LEDs match the 8-10 year service life of
most temperature controllers and home appliances-eliminates
frequent display replacements, reducing maintenance hassle.
RoHS Certified: Free from lead, mercury, and harmful substances-safe for home use
(even around food or children) and export to global markets (EU,
North America, Asia), meeting consumer and industrial safety
standards.
Multi-Color Versatility: Beyond pure green, available in red, blue, yellow green, amber,
orange, and pure white-flexible for functional cues (e.g., red for
"high temp alert", green for "normal") or brand-specific designs.
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Technical Specifications
| Category | Parameter | Specification (Temperature Controller-Optimized) |
|---|
| Basic Design | Display Type | 3-Digit 7-Segment LED Display (supports decimals/minus signs for
temps) |
| | Polarity | Common Cathode |
| | Digit Height | 20.32mm (0.8 inch) |
| | Package Dimensions (L*W*H) | 53.8*25.8*9.2mm / 59.3*27.5*8.4mm (dual-spec options for diverse
installations) |
| | Face Colour | Black |
| Optical Performance | Emitting Color | Pure Green |
| | Wavelength | 515-525nm |
| | Luminous Intensity | 120-140 mcd |
| Electrical Parameters | Forward Voltage (VF) | 2.8-3.3V per LED |
| | Current Characteristic | Extremely low current (optimized for energy efficiency) |
| | Power Consumption | Low |
| Quality & Compliance | Core Advantages | Large digits, low current, big viewing angle, long lifetime |
| | Certificate | RoHS |
| | Available Colors | Red, blue, yellow green, pure green, amber, orange, pure white |
Applications
This display is tailored for temperature controllers and
high-visibility devices, including:
Temperature Controllers: Wall thermostats (residential/commercial), industrial process temp
monitors (e.g., "80°C" for chemical tanks), freezer/refrigerator
controllers (e.g., "-20°C"/"5°C").
Home Appliances: Large ovens (bake temp "180°C"), electric grills (cook temp
"200°C"), smart refrigerators (large-format temp displays).
Instrument Panels: Audio equipment (volume "50"), industrial sensors (pressure
"100kPa"), numeric displays (counter "999").
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Order & Logistics Information
| Logistics Item | Details |
|---|
| Minimum Order Quantity (MOQ) | 1000 Pieces |
| Trade Term | EXW (Ex Works) |
| Payment Terms | L/C, T/T, WU (Western Union), Money Gram |
| Place of Origin | Guangdong, China (Mainland) |
| Means of Transport | Ocean, Air, Land |
| Production Capacity | 20,000 Pieces/Day |
| Packing | EPE + Carton (protects displays from vibration/damage during
shipping) |
| Delivery Date | 5-7 Days (after order confirmation and payment) |
| Brand Name | Light-Bo |
Contact Us
Our team specializes in energy-efficient LED displays for
temperature control, providing 24-hour support to help you optimize
your product's usability, cost-effectiveness, and market appeal!
