https://www.electrodragon.com/product/30ft-3-3vdc-wireless-bluetooth-rf-transceiver-module-rs232-ttl/
Features:
- BQB certificated
- Master / Slave Mode supported
- classic bluetooth easy to use
Compare
| func | BC04—B | HC—05 | HC—06 |
|---|---|---|---|
| 1. Software master-slave setting | ✔ | ✔ | ✔ |
| 2． Hardware master-slave settings | ✔ | X | X |
| 3． Ultra-low power consumption | 2 ~ 10mA | 30 ~ 40mA | 30 ~ 40mA |
| 4. Intelligent AT command system | ✔ | X | X |
| 5． Normal AT set | ✔ | ✔ | ✔ |
| 6. Support help command | ✔ | X | X |
| 7． Product Grade | Military Grade | Industrial Grade | Civilian Grade |
| 8． Support software development | ✔ | X | X |
| 9. Support uplink command | ✔ | X | X |
Note
- BC04 is better than HC05, HC06.
- Enter into serial UART mode (AT commands) BEFORE paired.
- Before bluetooth connection established, it's supported by AT commands to set the baud rate, name, pairing password, parameters setting will save after power-down.
- Automatically switches to transparent mode after the Bluetooth connection set.
ref
simialr modules - BC04-B-dat - HC05-dat - HC06-dat - NBL1012-dat