NRF51822-QFAC-R by Nordic Semiconductor Design and production,in Fidelis Electronics Limited Spot sales,And can pass Fidelis Electronics Limited Purchasing。NRF51822-QFAC-R Price reference $ 5.200000。NRF51822-QFAC-R - 。You can download Chinese information、Pin map、DatasheetData sheet function specification,In the information NRF51822-QFAC-R Detailed pin diagram and function application circuit diagram voltage and usage method and tutorial