Specification Brand : Adafruit BulletPoint1 : High-quality materials: This digital display module is made of high-quality PCB boards, which are more durable and durable than ordinary plastics, with precise wiring and clear board paths. The four-digit digital tube has stable structure, excellent performance and long service life. BulletPoint2 : Easy to Use: The module is very convenient to use, it can be used after connection, no complicated wiring process is required, and it can be operated by oneself, which is simple and convenient. BulletPoint3 : Model: This is a basic 4-digit 7-segment display module. The display shows each decimal point. The module is connected to digital I/O via 2 pins. BulletPoint4 : Product Specifications: Driver IC TM1637, voltage 5V, packaging includes 4 digital display modules, 4 pin headers, complete packaging, match the appropriate model size before use, you can use it with confidence. BulletPoint5 : Service Satisfaction: If you are not satisfied with your purchase for any reason, please feel free to contact our customer service through the buyer center, and we will solve it for you as soon as possible. Color : Blue ExternallyAssignedProductIdentifier : 9550512984639 ExternallyAssignedProductIdentifier1 : 711978441374 ExternallyAssignedProductIdentifier2 : 0711978441374 FinishType : Finish IncludedComponents : inc ItemName : Adafruit Mini 8x8 LED Matrix w/I2C Backpack - Blue [ADA959] ItemPackageDimensions_Height : 14.7066 centimeters ItemPackageDimensions_Length : 2.8956 centimeters ItemPackageDimensions_Width : 10.3124 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : led-segment-displays Manufacturer : Adafruit Material : copper PartNumber : ADA959 PowerSourceType : PowerSource ProductDescription : What's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 'multiplexed' - so to control 64 LEDs you need 16 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there's a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these adorable LED matrix backpacks come in. We have them in two flavors - a mini 8x8 and a 4-digit 0.56" 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial. ProductSiteLaunchDate : 2015-03-12T11:40:09.321Z Size : Yellow(MRA172E) SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 53121603