BT04-A Bluetooth Serial Module

This module supports UART interface and supports SP Bluetooth serial port protocol, which has low cost and small size.

Low power consumption, high sensitivity of transmission and reception, and only a small number of peripheral components can achieve its powerful functions.

Common Pins:

1>.Pin-1:UART_TXD.UART data output

2>.Pin-2:UART_RXD.UART data input

3>.Pin-11:RESETB.Reset/restart button

4>.Pin-12:3.3V

5>.Pin-13:GND

6>.Pin-21:GND

7>.Pin-22:GND

8>.Pin-24:P12 LED pin (slow flash when not connected. Always lit after connection)

9>.Pin-25:P12 host interrupt indication port, idle is low, the connection is high

Specificatoins of BT04-A Bluetooth Serial Module:

• Speciification:
• 1>.Model: DX-BT04-A
• 2>.Working frequency: 2.4GHz
• 3>.Communication interface: UART 3.3V level
• 4>.Working voltage: DC 3.0V-3.6V
• 5>.RSSI: Not supported
• 6>.Communication level: 3.3V
• 7>.Transmit power: 4dBm (maximum)
• 8>.Reference distance: 10m
• 9>.Transmit current: 8.5mA
• 10>.Accept current: 8.5mA
• 11>.Air speed: 6Kbps
• 12>.Antenna interface: Built-in PCB antenna
• 13>.Low power current: 400uA
• 14>.Receive sensitivity: < -84dBm at 0.1% BER
• 15>.Working humidity: 10%-90%
• 16>.Storage temperature: -40„~85„
• 17>.Working temperature: -25„~75„
• 18>.Module size:27*13*1.5mm