[IC]：CC2540

[Frequency]：2.402~2.480GHz

[Protocol]：BLE 4.0

[Distance]：60m

[Interface]：USB

[Introduction]：E104-2G4U04A is a small Bluetooth wireless module designed and manufactured by Chengdu Ebyte, USB type (pin spacing 1.27mm). This module has a high-performance PCB on-board antenna, using low power consumption Bluetooth (BLE) SOC solution.