[IC]：nRF52811

[Frequency]：2.402~2.480GHz

[Protocol]：BLE5.1

[Distance]：70m

[Size]：11.5*16mm

[Weight]：0.8±0.1g

[Introduction]：E104-BT5011A is a serial to BLE Bluetooth master-slave integrated module based on Bluetooth protocol version 5.1. It is small in size and low in power consumption. It works in the 2.4GHz frequency band.