[IC]：nRF51822

[Frequency]：2.379~2.496GHz

[Protocol]：BLE 4.2

[Distance]：0.1km

[Interface]：I/O

[Weight]：1.9±0.1g

[Introduction]：E73-2G4M04S1D is a small Bluetooth module that features ultra low power consumption with dual antenna PCB and IPX antenna of high performance. Based on originally imported IC nRF51822 from NORDIC,the module supports BLE 4.2 protocol.