E104-BT51A is a serial port to BLE Bluetooth slave node module that supports Bluetooth protocol version 5.0. It is small in size and low in power consumption. It works in the 2.4GHz frequency band. The E104-BT51A module is a serial-to-BLE Bluetooth module which is based on TI's  CC2640R2F chip. The module uses AT commands to set parameters, simple operation and convenient configuration. The module only supports Bluetooth slave mode. The module functionally supports low-power broadcast with

changeable content, variable baud rate data transparent transmission and file transmission, support for air command configuration, IO

port switch level setting, frequency And cycle variable PWM output, support AD analog quantity acquisition, Bluetooth battery

voltage service. Modules can be widely used in smart wear, home automation, home security, personal health care, smart home

appliances, accessories and remote controls, automotive electronics, lighting industry, industrial Internet, smart data collection, smart control and other fields. The module supports the maximum baud rate of 921600bps and the 2M PHY air rate of Bluetooth 5.0.

Features

 Support Bluetooth BLE 5.0 protocol;

 Supports adjustable Bluetooth package length;

 Support two working modes of configuration and transparent transmission;

 Support automatic broadcast and automatic connection after startup;

 Support IBeacon and ordinary broadcast switching;

 Support broadcast data can be set;

 Support MAC address binding;

 Support multiple serial port modes and baud rate;

 Support custom 16-bit UUID and 128-bit UUID;

 Support Bluetooth parameter air configuration;

 The maximum communication distance is 75m(0dBm);

 Support ultra-low power consumption sleep mode, and synchronously broadcast data and maintain connection;

 Support IO port level output;

 Support PWM output with variable frequency period;

 Support ADC analog quantity acquisition;

 Support battery voltage detection service;

 Support 2M, 1M airspeed;

 The maximum value of MTU data transmission unit is 230 bytes;

 Built-in PCB antenna, no external antenna is required;

Applications

 Wireless meter reading wireless sensor

 Smart home

 Industrial remote control, telemetry

 Smart buildings, smart buildings

 Automatic data collection

 Health sensor

 Smart wearable devices

 Smart robot

 Wireless sensing

 Electronic label

 Intelligent control

Parameters

Pin Definition（See the picture）

Useful Link:

CC2640R2F Datasheet

User Manual