E104-2G4U04A Ebyte CC2540 BLE module ble 4.0 USB BLE adapter receiver [IC]:CC2540 [Frequency]:2.402~2.480GHz [Protocol]:BLE 4.0 [Distance]:60m [Interface]:USB [Product weight]:8.8g±0.1g [Introduction]:E104-2G4U04A is a small BLE wireless module designed and manufactured by...