[IC]：nRF52811

[Frequency]：2.379~2.496GHz

[Protocol]：BLE 5.1/IEEE 802.15.4-2006

[Distance]：120m

[Size]：17.5*23.5mmm

[Introduction]：E73-2G4M04S1FX is a small volume chip Bluetooth wireless module independently developed based on nrf52811 chip of Nordic of Norway. It adopts 32mhz industrial crystal oscillator to ensure its industrial characteristics and stable performance.