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Description
ACM BLUETOOTH STACKABLE SHIELDBC04 B Master Slave Selectable Bluetooth Module Shield 5V 3. 3V with Switch BC04 B Master Slave Selectable Bluetooth Module Shield Overview This is redesigned arduino bluetooth shield based on our BC04 A module, arduino stackable, and use use arduino pin 3 and 4 as software serial port for communication. Features Master Slave selectable, based on BC04 B module LED indicator the bluetooth status, fast flashing means not paired yet, constant high status
BC04-B Master Slave Selectable Bluetooth Module Shield 5V/3.3V with Switch
BC04-B Master Slave Selectable Bluetooth Module Shield
Overview
This is redesigned arduino bluetooth shield based on our BC04-A module, arduino stackable, and use use arduino pin 3 and 4 as software serial port for communication.
Features
- Master/Slave selectable, based on BC04-B module
- LED indicator the bluetooth status, fast flashing means not paired yet, constant high status is paired. This is also connect to the arduino digital pin2
- Reset Button can clear the pairing status.
- A lot of standard 2.54 pins available for use.
Specifications
Settings :
- UART D0/D1 or D3/D4: Use either software serial port of arduino digital pin 3 (RX) and 4 (TX), or original UART port of digital pin 1(TX) and 0 (RX)
- Output/Arduino: Connect the uart of the bluetooth module to either external serial pins or to the arduino board.
- 5V/3V3 Switch: Set the UART logic power level, either 5V or 3V3, keep it at 5V to give the UART pins better power level protection.
Downloads
Additional Information
| Device | Shield |
| Type | BC04-B | Master Slave | Selectable | Bluetooth | 5V/3.3V |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
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Product Reviews
★★★★★ 5
Comfortable shoes
Size: 10.5, Color: Black
Fit well Look great Get compliments all the time
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Not true to size.
Size: 11 Wide, Color: Black
Satisfied customer. Product one size to big. Should have ordered 101/2 for size 11. Timely delivery
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great Fans!!
Color: Brushed Aluminum, Style: 3000K Warm White LED, Color: Brushed Aluminum, Style: 3000K Warm White LED
We bought 3! This is second set of fans we buy. The blow a great amount of air. The quality is great and install was easy. The app works great and is simple! You can control the fans thru app. Great fans!! Highly recommend!!
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Reviewed in the United States on April 20, 2024
★★★★★ 5
Amazing fan
Color: Brushed Aluminum, Style: 3000K Warm White LED, Color: Brushed Aluminum, Style: 3000K Warm White LED
Work with Alexa or you can use the remote control, easy installation, a perfect size, look beautiful, best price.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Best fan ever
Color: Brushed Aluminum, Style: 3000K Warm White LED
Fan works great, light is more than bright enough to light a large room, fan is great, on high it will provide more air than you will ever need, also works with Alexa flawlessly so that you dont even need the remote or your phone.
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Reviewed in the United States on January 20, 2025
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