Specification Brand : Adafruit BulletPoint1 : 4-digit seven-segment display BulletPoint2 : Good for time-based projects BulletPoint3 : Display only BulletPoint4 : White digits BulletPoint5 : 【MAX7219 Module Size】(L*W*H)3.2 X 3.2 X 1.5 cm. Color : Black CompatibleDevices : Electronic Devices CompatiblePhoneModels : Generic Not for Phones ConnectivityTechnology : Ethernet ConnectorType : Pin CurrentRating : 20 milliamps ExternallyAssignedProductIdentifier : 4260474032341 ExternallyAssignedProductIdentifier1 : 701851954930 ExternallyAssignedProductIdentifier2 : 0701851954930 FinishType : White IncludedComponents : Blu-ray ItemName : Adafruit White 7-segment clock display - 0.56" digit height [ADA1001] ItemPackageDimensions_Height : 1.524 centimeters ItemPackageDimensions_Length : 10.16 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : led-segment-displays Manufacturer : Adafruit Material : copper Material1 : plastic Material2 : metal MeasurementType : Voltmeter MinimumOperatingVoltage : 7 volts_of_direct_current ModelNumber : 1001 NumberOfItems : 3 NumberOfPorts : 1 PartNumber : ADA1001 Platform : not_machine_specific PowerPlugType : no_plug PowerSourceType : Battery Powered ProcessorCount : 1 ProductDescription : Design a clock, timer or counter into your next project using our pretty 4-digit seven-segment display. These bright crisp displays are good for adding numeric output. Besides the four 7-segments, there are decimal points on each digit and an extra wire for colon-dots in the center. These are 30mcd bright. You can drive these with less current to get the same brightness to save power, or crank them up to 20mA and have them at their brightest. These displays are multiplexed, common-cathode. What that means it that you can use a 74HC595 or just 8 microcontroller pins if you can spare them to control the 8 anodes (7-seg + decimal) at about ~15mA each, and then connect NPN transistors or a TPIC6B595 to the cathodes to sink the 8*15mA = ~120mA maximum per digit. Item Specifics Size: 0.76" x 1.9" (19.3mm x 50.3mm) Weight: 8.3g This version is just the raw display. ProductSiteLaunchDate : 2016-02-16T16:33:04.567Z Size : 1 Piece SpecificUsesForProduct : Electronic Projects Style : Modern SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable UnitCount : 1 UnspscCode : 43211900 WarrantyDescription : 3 Months