Waveshare® 4.2 Inch Passive NFC e-Paper Ink Screen ESL Wireless Power Supply Communication Electronic Shelf Label

Manual Click here to openWorking principle When you need to refresh the display you can use NFC enabled smartphones or card readers near the screen for wireless power supply and refresh the display content Applicable scene Shopping mall price tags asset equipment tags electronic shelf tags conference name tags etc Parameter Power supply wireless power supplyDisplay color black whiteDot pitch 0 212x0 212Resolution 400x300Gray level 2Refresh time 4s excluding data transmission time Display size 84 8mmx63 6mmDimensions 105 1mmx94 1mmViewing angle 170°Supported Smart Phones Package includes 1 x 4 2inch NFC Power e paper1 x Double sided foam tape