4 Digit 0.4 Inch Blue 7 Segment LED Display Common Anode for Timer Indicator

4-Digit Common Anode 7-Segment LED Display for Instrument Panels

Product Overview

This 4-digit common anode 7-segment LED display from Light-Bo is an industrial-grade solution optimized for instrument panels, digital indicators, and home appliance control systems. Featuring a high-contrast yellow-segment-on-black-surface design, 100-120mcd luminous intensity, and balanced X/Y ratio (0.29-0.31), it delivers crisp, uniform numeric readouts of temperature, humidity, speed, and equipment fault codes.
With a 50,000 pcs/day production capacity, 10-15 day delivery, and 10000-piece MOQ, it meets the high-volume manufacturing needs of instrument and appliance suppliers. The display supports multi-color emission options, offers fast heat dissipation and low power consumption, and is RoHS compliant-ideal for 24/7 stable operation in industrial equipment and home electronics.

Core Technical Specifications

Key Features (Instrument Panel-Optimized)
1. High-Contrast Visibility for Precision Parameter Readout
White Segments + Grey Surface Contrast: Eliminates ambient light glare (factory overhead lamps, home room lighting) and ensures 4-digit values (e.g., "0250" rpm, "25.50" °C, "E123" error code) are crisp and easy to read at 1-3 meters.
100-120mcd High Luminous Intensity: Delivers bright, eye-friendly illumination without excessive power consumption, perfect for close-range viewing of instrument panel data.
Continuous Uniform Segments: ≤5% brightness variation across all segments prevents digit distortion, critical for distinguishing precision values like "25.0°C" vs "250°C" in industrial temperature indicators.
2. Industrial-Grade Durability & Thermal Stability
Fast Heat Dissipation: Engineered with heat-resistant epoxy materials and optimized circuit design, it prevents overheating during prolonged 24/7 operation-ideal for high-power industrial instruments and home appliances with tight enclosure spaces.
Low Power Consumption & Extremely Low Current: 5-10mA forward current minimizes energy use for battery-powered portable instruments and reduces standby power draw for AC-powered devices, lowering operational costs.
Stable Performance in Variable Environments: Withstands temperature fluctuations (-10°C to 60°C) and minor vibrations from machinery operation, ensuring no flickering or segment failure in industrial workshops or residential settings.
3. Manufacturer-Friendly Easy Integration & High Efficiency
Common Anode IC Compatibility: Works seamlessly with mainstream driver ICs (e.g., MAX7219, HT1621, TM1637) and microcontrollers (Arduino, ESP32, PLCs) widely used in instrument panels. Simplifies circuit design for real-time data display, threshold alerts, and parameter calibration.
High Production Capacity & Timely Delivery: 50,000 pcs/day output and 10-15 day delivery meet tight project timelines for large-scale instrument and home appliance manufacturing, while EXW trade terms offer flexible logistics options for global customers.
Easy Assembly: Standardized through-hole/SMT pinout design supports automated production lines, reducing assembly time and labor costs for manufacturers.
4. Multi-Color Versatility for Functional Differentiation
Optional emitting colors enable targeted use across diverse application scenarios:
Red: High-visibility for over-limit alarms 
Pure Green: Normal/optimal status cues 
Amber: Warm tones for home appliance timers 
Blue: Modern aesthetics for premium smart home device panels

Applications
This display is purpose-built for instrument panels and multi-scenario digital readout systems:
Industrial Instruments: Temperature/humidity indicators, process control equipment, motor speed monitors, test and measuring devices.
Home Electronics: Set-top box channel/volume displays, smart appliance control panels, digital timers, climate controllers.
General Digital Indicators: Battery level monitors, portable environmental sensors, fitness equipment data readouts.

Product Image

Absolute Maximum Ratings(Ta=25ºC)

Code:Yellow Green- J

Code:Amber/Yellow -Y

Code:Orange -F

Code:Super Bright Red -R

Code:Ultra Bright Red -UR

Code:Pure Green -G

Code:Ultra Bright Blue -BH

Code:Ultra Bright White -WH

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

    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.

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 customized 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 .