4021BS 0.4 inch Two Digit 7-Segment Red LED Display Common Anode
Prices updated: 12 Oct 2026
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| Store | product | Price | View in store |
|---|---|---|---|
 Makers Electronics | Two Digit 7 Segment Red Led Display 0.4 inch Common Anode 4021BS | 10 EGP | View in store |
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Lowest price recorded: 10 EGP
About this product
A two-digit, 7-segment red LED display with a 0.4-inch digit height and a common anode configuration. It is used to show numbers and some letters in counters, timers, meters and simple display projects with microcontrollers.
Specifications
- Digits
- 2
- Digit height
- 0.4 inch
- Configuration
- Common anode
- Color
- Red
- Type
- 7-segment LED display
Frequently asked questions
What is the price of 4021BS 0.4 inch Two Digit 7-Segment Red LED Display Common Anode in Egypt?
4021BS 0.4 inch Two Digit 7-Segment Red LED Display Common Anode currently costs 10 EGP in Egypt.
Where can I buy 4021BS 0.4 inch Two Digit 7-Segment Red LED Display Common Anode in Egypt?
4021BS 0.4 inch Two Digit 7-Segment Red LED Display Common Anode is available from Makers Electronics. Compare the offers above to find the best price.
How do I wire a common anode 7-segment display?
Connect the common anode pin(s) to the positive supply, and drive each segment pin low through its own current-limiting resistor to light that segment. Commonly used resistors are around 220 to 330 Ω for a 5V supply. Use a transistor per digit when multiplexing.
Can an Arduino drive this display directly?
Yes for a single digit with resistors on each segment. For two digits, multiplexing with transistors on the digit common pins works, while a driver IC such as MAX7219 can reduce the number of wires and code needed.
