Customized Multi-Color 3-Digit 7-Segment LED Display Module-Common Anode for Cold Room Temperature Controllers

• Customization: Available
• IP Rating: IP54
• Certification: CCC
• Model NO.: LB9045IWBRG
• Character Height: 27.4mm (1.08 Nch)
• Operating Temperature: -35ºC ~ +85ºC
• Forward Voltage: 2.8-3.2V/LED
• Transport Package: EPE +Carton
• Specification: 90*45*12mm
• Trademark: lightbo
• Origin: Shenzhen
• HS Code: 85312000
• Production Capacity: 50000PCS/Day

Product Description

Customized Multi-Color 3-Digit 7-Segment LED Display Module - Common Anode for Cold Room Temperature Controllers

Product Main Image Area

Cold Room Integration Mockup: The display mounted on a cold room temperature controller, showing real-time temperature (e.g., "-18ºC") in ultra bright white, with a "DEFROST" symbol lit in red-demonstrating multi-color functionality.
Multi-Color Luminous Shot: Side-by-side display of different colors (white for normal temp, red for alarms, green for eco-mode) and custom symbols (COMPRESSOR, FAN, ECO) to showcase versatility.
Dimension Labeled Diagram: Clear marking of 90×45×12mm outer dimensions and 27.4mm (1.08-inch) character height, emphasizing the large, readable digits for cold room staff in bulky gloves.
Low-Temp Test Scene: The display functioning in a simulated -35ºC environment (labeled) to highlight cold resistance, with no flickering or brightness loss.
Custom Symbol Close-Up: Detailed shot of tailored symbols (HACCP, ENERGY SAVING, ALARM) alongside numeric digits, showing how symbols integrate with temperature readouts.

Core Specifications Table

Specification	Details
Display Type	Customized 3-digit 7-segment LED module (with integrated functional symbols)
Character Height	27.4mm (1.08 inch) - extra-large digits for easy reading from 2-5m (e.g., across cold rooms)
Outer Dimensions	90×45×12mm - compact depth (12mm) for mounting on cold room controller panels
Package Dimensions	90×45×12mm (same as outer dimensions, no extra packaging bulk)
Face/Segment Design	White segments + black surface (with protective film) - anti-glare, high contrast in cold room lighting
Polarity	Common Anode - compatible with cold room controller circuits (e.g., MCU-driven systems)
Emitting Colors	Standard: Ultra bright white, pure green, red, blue; Optional: amber, yellow, orange; Support multi-color switching
Operating Temperature	-35ºC ~ +85ºC - cold-resistant for freezers/cold rooms, heat-resistant for controller internal components
Electrical Parameters	Forward voltage: 2.8-3.2V/LED; Recommended forward current: 5-10mA/LED
Pin Type	Pin through hole - easy to solder, stable for long-term use in temperature-fluctuating environments
Certifications	RoHS, REACH - compliant with global environmental and safety standards

Detail Image

Key Selling Points
1. Cold-Resistant Design for Freezers/Cold Rooms
-35ºC ultra-low temperature operation: Engineered with cold-resistant LED chips and encapsulation materials (anti-cracking, anti-condensation) to avoid performance issues in freezers (-18ºC) or industrial cold rooms (-35ºC). Unlike standard displays (minimum -20ºC) that fail or dim in extreme cold, this module maintains full brightness and stability-critical for monitoring cold chain temperatures (e.g., food storage, pharmaceutical cold rooms).
No condensation damage: The black surface's protective film and sealed pin connections prevent moisture buildup (common in cold-to-warm temperature transitions) from shorting circuits, extending the display's lifespan in cold room environments.
2. Multi-Color & Custom Symbols for Intuitive Control
Multi-color functionality for status clarity: Assign colors to specific cold room states to reduce misinterpretation:
White: Normal temperature (e.g., "-18ºC" for freezers).
Red: Alarm (e.g., temperature rise to "-10ºC", "ALARM" symbol lit).
Green: Eco/energy-saving mode (e.g., "ECO" symbol + "-20ºC" for power optimization).
Blue: Defrost mode (e.g., "DEFROST" symbol + "-5ºC").
Tailored functional symbols: Integrate cold room-specific symbols to streamline operations, no extra indicator lights needed:
Operational symbols: COMPRESSOR (on/off), FAN (speed), LAMP (light status).
Compliance symbols: HACCP (food safety), ENERGY SAVING (power mode).
Alert symbols: DEFROST (active), ALARM (temperature deviation), AUX (auxiliary heating).
3. Large Digits & Low Power for Practicality
27.4mm (1.08-inch) extra-large digits: Readable from across cold rooms (2-5m) and even when staff wear thick insulated gloves (no need to lean close to the controller). Critical for quick temperature checks in busy cold storage facilities.
Low power consumption (5-10mA/LED): Ideal for cold room controllers powered by backup batteries (e.g., during power outages). Reduces energy use, aligning with "ECO" modes and lowering long-term operational costs.
4. High Compatibility & Easy Customization
IC compatible: Works with common cold room controller ICs (e.g., STM32, PIC, 74HC595) for seamless integration. No custom driver development needed-simplifies controller design for manufacturers.
Full customization support: Tailor the module to specific cold room needs:
Size: Adjust outer dimensions (e.g., 80×40×12mm) to fit existing controller panels.
Colors: Add custom color combinations (e.g., green for "OK", red for "ERROR").
Symbols: Add brand-specific logos or industry-specific symbols (e.g., "PHARMA" for pharmaceutical cold rooms).
Easy assembly: Through-hole pins ensure secure soldering to controller PCBs, with no risk of loose connections in temperature-fluctuating environments.

Target Applications
1. Cold Storage & Freezer Controllers
Industrial cold rooms: Display real-time temperature (e.g., "-25ºC"), defrost status ("DEFROST" + red), and compressor operation ("COMPRESSOR" + green).
Commercial freezers (supermarkets): Show set temperature (e.g., "-18ºC"), energy-saving mode ("ECO" + blue), and fan status ("FAN" + white).
Pharmaceutical cold rooms: Monitor HACCP-compliant temperatures (e.g., "2ºC") and trigger red "ALARM" for deviations (e.g., "5ºC").
2. Home/Commercial Refrigeration
Smart fridges: Display fridge/freezer temperatures (e.g., "5ºC/-18ºC"), "DEFROST" mode, and "LAMP" status (on/off).
Wine coolers: Show wine storage temperature (e.g., "12ºC") and "ENERGY SAVING" mode (green).
3. Temperature Control Systems
Heating/cooling thermostats: Indicate set temperature (e.g., "22ºC"), actual temperature (e.g., "20ºC"), and "AUX" heating status (red).
Humidity monitors (cold rooms): Display humidity levels (e.g., "60%RH") alongside temperature, with "FAN" symbol for humidity regulation.

Procurement & Delivery Information

Procurement Item	Details
Minimum Order Quantity (MOQ)	50 pieces (customized orders); 10 pieces (sample orders for testing)
Unit Price Range	$0.85-$1.50/piece (varies by customization: colors, symbols, quantity)
Customization Lead Time	10-15 working days (from design confirmation to sample production)
Production Capacity	10,000 pieces/day (standard); 5,000 pieces/day (customized)
Packaging	Anti-static plastic trays (20 pieces/tray) + corrugated cartons (shockproof, moisture-proof)
Delivery Cycle	Standard orders: 5-7 working days; Customized orders: 15-20 working days
Shipping Methods	Domestic: Express (SF, ZTO); Export: Sea (FOB Shenzhen), Air (DHL/UPS)

Application Image

Quality Assurance
Cold Resistance Testing: Each unit undergoes a 48-hour cycle test (-35ºC for 24h, +85ºC for 24h) to verify stability in temperature fluctuations-only passing units are shipped.
Symbol & Color Consistency: Custom symbols are laser-etched for durability, and multi-color segments are calibrated to ensure uniform brightness across batches.
Warranty: 2-year warranty for non-human damage. If the module fails in cold room use (e.g., cold-induced dimming), free replacement is provided (batch number and test report required).
Frequently Asked Questions (FAQ)
Q: Can the display switch colors automatically based on temperature?
A: Yes-with controller integration, it can switch colors dynamically (e.g., white for -18ºC to -25ºC, red if temp rises above -15ºC) to alert staff without needing to read numeric values.
Q: Is the through-hole pin design compatible with automated assembly lines?
A: Yes-we offer optional pin spacing (e.g., 2.54mm standard pitch) to fit automated insertion machines, suitable for high-volume controller production.
Q: Can we add a "HACCP" symbol for food safety compliance?
A: Absolutely-we support custom symbol design (vector files accepted) and integrate them seamlessly with the 3-digit display, no extra space required.