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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21
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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.
- Except Preorder products are shipped in 48 hours.
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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
4.4 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Stylish, Well-Made, and Comfortable!
Size: XX-Large, Color: Black
I recently purchased this 3-piece suit for my grandson, and I’m very impressed with the quality and fit. The fabric feels durable yet soft, and the tailoring gives it a sharp, modern look without feeling too stiff. The vest adds a classic touch and elevates the overall style.
The sizing was accurate, and the suit was comfortable to wear for long hours at work and events. The jacket, pants, and vest all coordinate perfectly, and I appreciate the attention to detail, like the lining and buttons.
Whether you’re attending a wedding, business meeting, or formal event, this suit looks expensive without breaking the bank. Highly recommend for anyone looking for a versatile, stylish 3-piece suit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025
★★★★★ 5
1st Time Buyer
I was a little unsure about the sizing at first, but the fit turned out perfect. Definitely a great purchase the quality was on point and it did not disappoint at all.Not mention he said it was very comfortable and he looked really nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Perfect Fit and Great Quality!
Size: 4, Color: Vest Pants Set-black 2, Size: 4, Color: Vest Pants Set-black 2
I love this set! It came with everything included shirt, vest, pants, tie, and bow tie which made it a fantastic value. I bought it for my grandson, who is a tall 3-year-old (3’9 and 41lbs), so I usually size up and got a size 4. It fit him perfectly! The quality is excellent well made with great fabric not a stretchy material and it looked absolutely adorable on him. I would definitely buy this again. Great price for what you get!
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Reviewed in the United States on August 6, 2025
★★★★★ 5
Affordable and great quality!
Love this suit so much! Bought for my 10 year old son and fit him like a glove. Great quality suit for good price! Will definetely buy more.
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Reviewed in the United States on December 14, 2025
★★★★★ 5
Love!
Size: 8, Color: Vest Pants Set-navy Blue
Great quality! My son was so excited to get a new gentleman suit, and it fits him perfectly. He looks absolutely dapper in it!
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Reviewed in the United States on January 19, 2026
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