InstructionThis is an NFC-powered 7.5inch e-Paper Module, with 800x480 resolution. Users can transmit data from smartphone or NFC reader to e-Paper and refresh by NFC.Features7.5" NFC-Powered E-Paper--Adopts Novel Passive NFC Technology.No Battery Required, No More Battery Life TroubleWireless NFC Powered Display Refreshing--Passive NFC Solution, No Battery Required, No Messy Wiring, Stable OperationRefreshing Example--Refreshed By ST25R3911B NFC BoardApplication ExamplesSuitable For Price Tags, Asset/Equipment Tags, Shelf Labels, Conference Name Tags...SpecificationPower: NFC-poweredResolution: 800x480Dot pitch: 0.205 × 0.204Refresh time: 5sDisplay color: black, whiteViewing angle: >170°How It WorksTo Refresh The Display Content,Use A Smart Phone With NFC Function, Or An NFC Reader,Close To The E-Paper For Both Wireless Powering And Data TransferPackage Content7.5inch NFC-Powered e-Paper x1 Note Online development resources are provided , please contact with us to get if you need.