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Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Specifications
Brand Name :
LIGHT-BO
Model Number :
LB20471LWH3B-D
Certification :
ISO9001&RoHS
Place of Origin :
Shenzhen, China
MOQ :
1000
Price :
Negotiate
Payment Terms :
T/T,Western Union,
Supply Ability :
20000 PCS/Day
Delivery Time :
10-15 days
Packaging Details :
EPE+CARTON
Digit Height :
12mm (0.47 inch)
Outer Dimensions (L×W×H) :
20.9 × 13.9 × 5.9mm
Luminous Intensity :
120-140 mcd
Packing :
EPE+Carton
Origin :
Shenzhen
Brandname :
LIGHT-BO
Description

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.


Product Image


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”).

Technical Specifications

Category Parameter Specification (Water Heater-Optimized)
Basic Design Display Type 2-Digit 7-Segment LED Display (supports decimal points for precision temps)

Polarity Common Cathode

Digit Height 12mm (0.47 inch)

Outer Dimensions (L×W×H) 20.9 × 13.9 × 5.9mm

Segment/Surface Finish Yellow segments on Black Surface
Optical Performance Emitting Color Ultra Bright White

Luminous Intensity 120-140 mcd

Color Coordinate (X/Y) 0.29-0.31 (neutral white, no color bias)

Viewing Angle Wide (≥120° horizontal, ≥110° vertical)
Electrical Parameters Forward Voltage (VF) 2.8-3.2V per LED

Forward Current 5-10mA per LED

Power Consumption Low (energy-efficient for daily use)
Quality & Compliance Core Advantages Fast heat-dissipation, stable performance, wide viewing angle, easy assembly

Compliance RoHS Compliant


Applications
This display is purpose-built for water heaters and compact temp-controlled devices, including:
Water Heater Temperature Control: Electric/gas water heaters (showing “40°C”–“80°C”), tankless water heaters (real-time temp “55°C”), or under-sink water heaters (temp “60°C”).
Home Appliances: Small ovens (temp “180°C” → displays “18”), coffee makers (brew temp “95°C”), or electric kettles (heat level “03” → 80°C).
Temperature Controllers: Room thermostats (temp “22°C”), greenhouse mini-controllers (temp “25°C”), or aquarium heaters (temp “28°C”).
Instrument Panels: Portable temp meters (water temp “37°C”), battery chargers (charge “90%”), or fitness equipment (workout time “15”).


Why Choose This Display for Water Heaters?
Safe Temp Reading: Ultra bright light + high contrast prevent misreading hot temps—critical for avoiding scalds in bathrooms.
Heat & Humidity Resistance: Fast heat-dissipation and moisture tolerance handle water heater-specific harsh conditions, no premature failure.
Space-Saving Fit: Compact dimensions fit slim water heater enclosures—no need to enlarge existing designs.
Energy Efficiency: Low current use cuts water heater energy bills, aligning with eco-friendly home trends.
Easy Manufacturing: Common cathode polarity + standard size fit existing water heater PCBs—saves manufacturers redesign time.


Order & Logistics Information
Minimum Order Quantity (MOQ): 300 pieces for standard models; 500 pieces for customized variants (e.g., adjusted brightness).
Packing: Anti-static EPE + carton (each display is individually wrapped to protect segments and pins during shipping).
Delivery Time: 5–7 days for standard orders; 10–12 days for custom configurations.
Transport: Express (FedEx/DHL for urgent samples), Air (medium-volume shipments), Ocean (bulk production runs for water heater manufacturers).


Product Parameters

Absolute Maximum Ratings(Ta=25ºC)

Parameter Symbol Ratings Unit
Forward Current(per dice) Ipm 20 mA
Reverse Voltage(per dice) Vr 5 V
Power Dissipation(per dice) Pm 80 mW
Operating Temperature Range Topr -40~+85 ºC
Storage Temperature Range Tstg -40~+85 ºC
Solder Temperature(≤3 seconds) Th 260

ºC

Code:Yellow Green- J

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 1.8
2.4 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 30
40 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 569
574 nm


Code:Amber/Yellow -Y

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 1.8
2.5 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 60
80 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 585
595 nm


Code:Orange -F

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 1.8
2.4 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 60
80 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 600
605 nm


Code:Super Bright Red -R

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 1.8
2.2 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 50
60 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 630
635 nm


Code:Ultra Bright Red -UR

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 1.8
2.2 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 80
100 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 625
635 nm


Code:Pure Green -G

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 2.6
3.2 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 120
180 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 515
525 nm


Code:Ultra Bright Blue -BH

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 2.8
3.2 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 120
140 mcd
Spectrum With Of Half Value △λ If=10mA
20
nm
Wavelength Dλ If=10mA 460
465 nm


Code:Ultra Bright White -WH

Parameter Symbol Condition Min Typ Max Unit
Forward Voltage Vf If=10mA 2.8
3.2 V
Reverse Voltage Vr Ir=10uA 5

V
Luminous Intensty Iv If=10mA 120
140 mcd
LED color Temperature K If=10mA 5500 20 6800 K
Chromaticity Coordinates
 X/Y If=10mA 0.29,0.32
0.30,0.33 nm


SHENZHEN GUANGZHIBAO TECHNOLOGY CO., LTD. (BRAND: LIGHT-BO)stablished in 2006 , A company that integrates R & D, manufacturing and sales of optoelectronics LED Displays . ISO 9001 2015 Quality Management Systems certified company . With more than 15 years OEM and ODM experience .

LIGHTBO has been committed to provide high quality and low cost customized solutions to help customers reduce cost and enhance competitiveness.

Products Applications

Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
7 Segment LED Display, Customized LED Display, Numeric LED Display, Dot matrix LED Display, widely used for home appliances,tempearture indicators, humidity indicators, refrigerator controller,thernostats indicator,heating and cooling control and so on

Certifications

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

Office and Factory Overview

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

Company Exhibitions

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

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

SHIPPING SERVICES

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

FAQ

FAQ(Frequently Asked Questions)
Q1 Are you trading company or manufacturer?
A: We are original manufacturer with more than 20 years experience in optoelectronic LED displays .
Q2 What is your main products?
A: Our main products include 7 Segment LED display, SMD LED Display,Dot matrix LED Display, Arrow LED display, Custom Design LED Display ,LED light bar,Through hole led, SMD LEDs,LED Backlights, and so on .
Q3 What is your MOQ?
A: Our MOQ is 1000 pcs , We can also accept sample orders and small orders with quantity less than our MOQ .
Q4 Before placing order, Can I get some samples for test?
A: Yes. We can provide 5-10 free samples for your testing, but the freight cost will be borne by the customer.
Q5 How long is your delivery time?
A: Delivery time:About 10-20 days; According to order quantity and raw materials. If you have urgent order,and we have raw materials in stock,
we can adjust our production plan to make it ready within 7-10 days .
Q6 What is your terms of payment?
A: We accept bank transfer,T/T,Western Union and Paypal with small amount. Detailes of payment methods can be negotiatble.
Q7 Can you quote me FOB prices?
A: Yes. We can quote you prices based on incoterms EXW, FOB, CIF,DDP.
Q8 How can I get your catalogue and price list?
A: Yes . Please let us know your email address or contact us from website directly for our catalogue and price list .
Q9 Can I negotiate the prices?
A: Yes, we may consider discounts for bulk orders.
Q10 How much will the shipping charges be?
A: It depends on the size of your shipment and the method of shipping.
We will offer the charge to you as you requested.
Q11 Can you do custom design products?
A: Yes , OEM&ODM service are available .We can customize the sizes,led color and functional icons according to your requirements.
Q12 If I send my design , can you make it for myself only ,and will not show it to any one else?
A: Yes , we will not show it or sell to others without your authorization.
Q13 What will be the samples lead time for customzied products?
A: Samples lead time will be about 20-25 working days after receiving mold cost and mold drawing approval from customers .
Q14 What is the shipping methods?
A:We usually ship the goods by DHL, FEDEX,UPS,EMS,BY AIR,BY SEA etc, also you can choose the other way that best for you.
Q15 How do you ensure the quality of your products?
A: we are ISO 9001 QMS ceritified manufacturers with more than 20 years experience ,We conduct twice 100% percent test for all of our products before shipment .

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

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Product Detail
Brand Name :
LIGHT-BO
Model Number :
LB20471LWH3B-D
Certification :
ISO9001&RoHS
Place of Origin :
Shenzhen, China
MOQ :
1000
Price :
Negotiate
Contact Supplier
video
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control
Ultra Bright White 12mm (0.47-Inch) 2-Digit 7-Segment Common Cathode LED Display for Water Heater Temperature Control

Shenzhen Guangzhibao Technology Co., Ltd.

Verified Supplier
10 Years
guangdong, shenzhen
Since 2006
Business Type :
Manufacturer
Main Products :
7 Segment LED Display, 14 Segment LED Display, 16 Segment LED Display
Total Annual :
10million-12million
Employee Number :
150~200
Certification Level :
Verified Supplier
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