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$9.99
DSD TECH HC-05 Bluetooth Serial Pass-Through Module Wireless Serial Communication With Button For Arduino
Amazon.com
772
$9.99
DSD TECH HC-05 Bluetooth Serial Pass-Through Module Wireless Serial Communication With Button For Arduino
Amazon.com
772
$6.98
$7.80
YWBL-WH Mini Bluetooth Amplifier Board 4.2 Circuit Stereo Speaker Digital Module 5W+5W
Amazon.com
15
10% off
$6.98
$7.80
YWBL-WH Mini Bluetooth Amplifier Board 4.2 Circuit Stereo Speaker Digital Module 5W+5W
Amazon.com
15
$39.99
Circuit Cubes Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible With Most Building Blocks STEM Toy Learning
Amazon.com
72
Free shipping
$39.99
Circuit Cubes Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible With Most Building Blocks STEM Toy Learning
Amazon.com
72
$6.30
MDBT42Q-P192KV2 Nordic Nrf52810 Bluetooth Module BLE BT5.1 BT5.0 BT4.2 FCC IC CE Pre-Certified
Amazon.com
1
$6.30
MDBT42Q-P192KV2 Nordic Nrf52810 Bluetooth Module BLE BT5.1 BT5.0 BT4.2 FCC IC CE Pre-Certified
Amazon.com
1
$10.99
DSD TECH HM-10 Bluetooth 4.0 BLE Ibeacon UART Module With 4PIN Base Board For Arduino UNO R3 Mega 2560 Nano
Amazon.com
661
$10.99
DSD TECH HM-10 Bluetooth 4.0 BLE Ibeacon UART Module With 4PIN Base Board For Arduino UNO R3 Mega 2560 Nano
Amazon.com
661
$21.98
ZK-1002T Bluetooth Amplifier Board 2.0CH 100W2 Mini Audio AMP With Treble And Bass Control, BT And AUX Inputs, DC 9-24V Stereo AMP Module For Home
Amazon.com
56
$21.98
ZK-1002T Bluetooth Amplifier Board 2.0CH 100W2 Mini Audio AMP With Treble And Bass Control, BT And AUX Inputs, DC 9-24V Stereo AMP Module For Home
Amazon.com
56
$2.59
Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module With
Aliexpress
$2.59
Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module With
Aliexpress
$1.05
$1.45
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
27% off
$1.05
$1.45
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
$39.99
Renogy - BT-1 Bluetooth Module - Black
Best Buy
2K+
Free shipping
$39.99
Renogy - BT-1 Bluetooth Module - Black
Best Buy
2K+
$2.68
$7.92
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
66% off
$2.68
$7.92
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$0.95
$1.31
1PC Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
27% off
$0.95
$1.31
1PC Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
$2.14
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$2.14
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$0.88
12V Stereo Bluetooth Audio Module Circuit Board Bluetooth Amplifier Board Bluetooth PCBA
Aliexpress
Free shipping
$0.88
12V Stereo Bluetooth Audio Module Circuit Board Bluetooth Amplifier Board Bluetooth PCBA
Aliexpress
Free shipping
$0.73
$1.62
DC 12V5V Stereo Bluetooth Audio Module Circuit Board Bluetooth No Power Amplifier Board Bluetooth
Aliexpress
Free shipping
54% off
$0.73
$1.62
DC 12V5V Stereo Bluetooth Audio Module Circuit Board Bluetooth No Power Amplifier Board Bluetooth
Aliexpress
Free shipping
$3.26
$6.67
EGBO Bluetooth Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board Stereo
Aliexpress
51% off
$3.26
$6.67
EGBO Bluetooth Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board Stereo
Aliexpress
$0.99
$1.44
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board Micro USB 5V DIY
Aliexpress
31% off
$0.99
$1.44
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board Micro USB 5V DIY
Aliexpress
$15.99
$18.97
DAMGOO 50W+50W Bluetooth 5.0 Amplifier Board,100W Audio Amp Board Dual Channel DC8-24V,Easy Installation And Password Free Connect To Phone Quietly
Amazon.com
949
15% off
$15.99
$18.97
DAMGOO 50W+50W Bluetooth 5.0 Amplifier Board,100W Audio Amp Board Dual Channel DC8-24V,Easy Installation And Password Free Connect To Phone Quietly
Amazon.com
949
$1.61
$1.74
Multifunctional Bluetooth Stereo Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board
Aliexpress
$1.61
$1.74
Multifunctional Bluetooth Stereo Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board
Aliexpress
$4.20
$5.00
NRF52810 Automation Module BLE 5.0 Bluetooth Module Low Power Consumption Module Indoor Positioning
Aliexpress
Free shipping
16% off
$4.20
$5.00
NRF52810 Automation Module BLE 5.0 Bluetooth Module Low Power Consumption Module Indoor Positioning
Aliexpress
Free shipping
$19.99
$22.99
ZK 1002T Bluetooth 5.0 Amplifier Board, 2X100 Watt Amp With TPA3116D2 Chip, Stereo Amplifier 2.0 Channel With Treble And Bass Control BT And AUX
Amazon.com
34
13% off
$19.99
$22.99
ZK 1002T Bluetooth 5.0 Amplifier Board, 2X100 Watt Amp With TPA3116D2 Chip, Stereo Amplifier 2.0 Channel With Treble And Bass Control BT And AUX
Amazon.com
34
$0.89
$1.37
DC 5V Bluetooth Audio Player Multifunction Audio Decoder Board Module Amplifier Board DIY BT MP3
Aliexpress
35% off
$0.89
$1.37
DC 5V Bluetooth Audio Player Multifunction Audio Decoder Board Module Amplifier Board DIY BT MP3
Aliexpress
$1.11
$1.39
Lossless Decoding Module Wireless Bluetooth MP3 Decoder Board 3.7-5V BLE 4.1 Circuit Board Micro USB
Aliexpress
Free shipping
20% off
$1.11
$1.39
Lossless Decoding Module Wireless Bluetooth MP3 Decoder Board 3.7-5V BLE 4.1 Circuit Board Micro USB
Aliexpress
Free shipping
$21.15
PA213 Bluetooth 5.0 Module CSR8675 Module Bluetooth Audio Module I2S/ SPDIF Out
eBay.com
$21.15
PA213 Bluetooth 5.0 Module CSR8675 Module Bluetooth Audio Module I2S/ SPDIF Out
eBay.com
$4.49
Wireless Bluetooth 5.0 Circuit Receiver Board Bluetooth Audio Receiver Module
eBay.com
$4.49
Wireless Bluetooth 5.0 Circuit Receiver Board Bluetooth Audio Receiver Module
eBay.com
$20.95
JR-RX-12V JR1630RXS 2.4G Bluetooth Control Box Controller Circuit Board Conversion Kit For Power Wheels Upgrade,12V Remote Receiver For Kids Ride On
Amazon.com
26
$20.95
JR-RX-12V JR1630RXS 2.4G Bluetooth Control Box Controller Circuit Board Conversion Kit For Power Wheels Upgrade,12V Remote Receiver For Kids Ride On
Amazon.com
26
$1.19
$1.92
Multi-Function BT Audio Amplifier Board DC 3.7V Micro USB DIY Bluetooth Module Amplifier Module TF
Aliexpress
Free shipping
38% off
$1.19
$1.92
Multi-Function BT Audio Amplifier Board DC 3.7V Micro USB DIY Bluetooth Module Amplifier Module TF
Aliexpress
Free shipping
$199.99
Yak-Power 8 Circuit Bluetooth Enabled Switching System
Cabela's
78
$199.99
Yak-Power 8 Circuit Bluetooth Enabled Switching System
Cabela's
78
$4.08
110PCS EGBO KCX_BT002 Bluetooth Audio Receiver Board Module Lossless 4.2 Wireless Audio IC Board
Aliexpress
Free shipping
$4.08
110PCS EGBO KCX_BT002 Bluetooth Audio Receiver Board Module Lossless 4.2 Wireless Audio IC Board
Aliexpress
Free shipping
$0.44
5V Bluetooth Audio Receiver Module Board Bluetooth Amplifier Board Bluetooth PCBA CA-6928
Aliexpress
$0.44
5V Bluetooth Audio Receiver Module Board Bluetooth Amplifier Board Bluetooth PCBA CA-6928
Aliexpress
$3.11
$6.47
DIY Bluetooth Audio Module Multifunctional Audio Amplifier Circuit Board V96 Bi-Amplifier Color
Aliexpress
51% off
$3.11
$6.47
DIY Bluetooth Audio Module Multifunctional Audio Amplifier Circuit Board V96 Bi-Amplifier Color
Aliexpress
$11.79
2 Wireless Bluetooth 5.1 Power Amplifier Board Stereo Audio Circuit Board Module For DIY Speakers
Walmart
Free shipping
$11.79
2 Wireless Bluetooth 5.1 Power Amplifier Board Stereo Audio Circuit Board Module For DIY Speakers
Walmart
Free shipping
$1.16
$1.37
Bluetooth-Compatible 5.4 DC3.5V-5V 5W Audio Amplifier Board With 3.5mm AUX Module Receiver DIY
Aliexpress
15% off
$1.16
$1.37
Bluetooth-Compatible 5.4 DC3.5V-5V 5W Audio Amplifier Board With 3.5mm AUX Module Receiver DIY
Aliexpress
$14.99
ZAWELIYO Electric Scooter Dashboard Bluetooth Board Switch Panel, Replacement Circuit Board For Xiaomi M365 Pro Electric Scooter
Amazon.com
Free shipping
$14.99
ZAWELIYO Electric Scooter Dashboard Bluetooth Board Switch Panel, Replacement Circuit Board For Xiaomi M365 Pro Electric Scooter
Amazon.com
Free shipping
$26.99
DX-CP24 Bluetooth To RS485 Serial Adapter Industrial Wireless Bluetooth Communication Module To RS485 Converter, Change 485 Wired Device To Wireless,
Amazon.com
$26.99
DX-CP24 Bluetooth To RS485 Serial Adapter Industrial Wireless Bluetooth Communication Module To RS485 Converter, Change 485 Wired Device To Wireless,
Amazon.com
$20.23
$26.27
Input Phonograph Circuit Board Bluetooth-Compatible Module Record Player Module Development Board
Aliexpress
22% off
$20.23
$26.27
Input Phonograph Circuit Board Bluetooth-Compatible Module Record Player Module Development Board
Aliexpress
$0.72
$0.98
DIY Bluetooth Audio Receiver Board Bluetooth 5.0 MP3 Car Audio Board Stereo Music Module 3.7-5V
Aliexpress
26% off
$0.72
$0.98
DIY Bluetooth Audio Receiver Board Bluetooth 5.0 MP3 Car Audio Board Stereo Music Module 3.7-5V
Aliexpress

Shop Bluetooth Circuits

Sponsored
About our ads
$2.14
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$2.14
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$0.88
12V Stereo Bluetooth Audio Module Circuit Board Bluetooth Amplifier Board Bluetooth PCBA
Aliexpress
Free shipping
$0.88
12V Stereo Bluetooth Audio Module Circuit Board Bluetooth Amplifier Board Bluetooth PCBA
Aliexpress
$0.73
$1.62
DC 12V5V Stereo Bluetooth Audio Module Circuit Board Bluetooth No Power Amplifier Board Bluetooth
Aliexpress
Free shipping
54% off
$0.73
$1.62
DC 12V5V Stereo Bluetooth Audio Module Circuit Board Bluetooth No Power Amplifier Board Bluetooth
Aliexpress
$3.26
$6.67
EGBO Bluetooth Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board Stereo
Aliexpress
51% off
$3.26
$6.67
EGBO Bluetooth Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board Stereo
Aliexpress
$0.99
$1.44
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board Micro USB 5V DIY
Aliexpress
31% off
$0.99
$1.44
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board Micro USB 5V DIY
Aliexpress
$15.99
$18.97
DAMGOO 50W+50W Bluetooth 5.0 Amplifier Board,100W Audio Amp Board Dual Channel DC8-24V,Easy Installation And Password Free Connect To Phone Quietly
Amazon.com
949
15% off
$15.99
$18.97
DAMGOO 50W+50W Bluetooth 5.0 Amplifier Board,100W Audio Amp Board Dual Channel DC8-24V,Easy Installation And Password Free Connect To Phone Quietly
Amazon.com
$1.61
$1.74
Multifunctional Bluetooth Stereo Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board
Aliexpress
$1.61
$1.74
Multifunctional Bluetooth Stereo Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board
Aliexpress
$4.20
$5.00
NRF52810 Automation Module BLE 5.0 Bluetooth Module Low Power Consumption Module Indoor Positioning
Aliexpress
Free shipping
16% off
$4.20
$5.00
NRF52810 Automation Module BLE 5.0 Bluetooth Module Low Power Consumption Module Indoor Positioning
Aliexpress
$19.99
$22.99
ZK 1002T Bluetooth 5.0 Amplifier Board, 2X100 Watt Amp With TPA3116D2 Chip, Stereo Amplifier 2.0 Channel With Treble And Bass Control BT And AUX
Amazon.com
34
13% off
$19.99
$22.99
ZK 1002T Bluetooth 5.0 Amplifier Board, 2X100 Watt Amp With TPA3116D2 Chip, Stereo Amplifier 2.0 Channel With Treble And Bass Control BT And AUX
Amazon.com
$0.89
$1.37
DC 5V Bluetooth Audio Player Multifunction Audio Decoder Board Module Amplifier Board DIY BT MP3
Aliexpress
35% off
$0.89
$1.37
DC 5V Bluetooth Audio Player Multifunction Audio Decoder Board Module Amplifier Board DIY BT MP3
Aliexpress
$1.11
$1.39
Lossless Decoding Module Wireless Bluetooth MP3 Decoder Board 3.7-5V BLE 4.1 Circuit Board Micro USB
Aliexpress
Free shipping
20% off
$1.11
$1.39
Lossless Decoding Module Wireless Bluetooth MP3 Decoder Board 3.7-5V BLE 4.1 Circuit Board Micro USB
Aliexpress
$21.15
PA213 Bluetooth 5.0 Module CSR8675 Module Bluetooth Audio Module I2S/ SPDIF Out
eBay.com
$21.15
PA213 Bluetooth 5.0 Module CSR8675 Module Bluetooth Audio Module I2S/ SPDIF Out
eBay.com
$4.49
Wireless Bluetooth 5.0 Circuit Receiver Board Bluetooth Audio Receiver Module
eBay.com
$4.49
Wireless Bluetooth 5.0 Circuit Receiver Board Bluetooth Audio Receiver Module
eBay.com
$20.95
JR-RX-12V JR1630RXS 2.4G Bluetooth Control Box Controller Circuit Board Conversion Kit For Power Wheels Upgrade,12V Remote Receiver For Kids Ride On
Amazon.com
26
$20.95
JR-RX-12V JR1630RXS 2.4G Bluetooth Control Box Controller Circuit Board Conversion Kit For Power Wheels Upgrade,12V Remote Receiver For Kids Ride On
Amazon.com
$1.19
$1.92
Multi-Function BT Audio Amplifier Board DC 3.7V Micro USB DIY Bluetooth Module Amplifier Module TF
Aliexpress
Free shipping
38% off
$1.19
$1.92
Multi-Function BT Audio Amplifier Board DC 3.7V Micro USB DIY Bluetooth Module Amplifier Module TF
Aliexpress
$199.99
Yak-Power 8 Circuit Bluetooth Enabled Switching System
Cabela's
78
$199.99
Yak-Power 8 Circuit Bluetooth Enabled Switching System
Cabela's
$4.08
110PCS EGBO KCX_BT002 Bluetooth Audio Receiver Board Module Lossless 4.2 Wireless Audio IC Board
Aliexpress
Free shipping
$4.08
110PCS EGBO KCX_BT002 Bluetooth Audio Receiver Board Module Lossless 4.2 Wireless Audio IC Board
Aliexpress
$0.44
5V Bluetooth Audio Receiver Module Board Bluetooth Amplifier Board Bluetooth PCBA CA-6928
Aliexpress
$0.44
5V Bluetooth Audio Receiver Module Board Bluetooth Amplifier Board Bluetooth PCBA CA-6928
Aliexpress

Shop Bluetooth Circuits

Sponsored
About our ads
$9.99
DSD TECH HC-05 Bluetooth Serial Pass-Through Module Wireless Serial Communication With Button For Arduino
Amazon.com
772
$9.99
DSD TECH HC-05 Bluetooth Serial Pass-Through Module Wireless Serial Communication With Button For Arduino
Amazon.com
772
$6.98
$7.80
YWBL-WH Mini Bluetooth Amplifier Board 4.2 Circuit Stereo Speaker Digital Module 5W+5W
Amazon.com
15
10% off
$6.98
$7.80
YWBL-WH Mini Bluetooth Amplifier Board 4.2 Circuit Stereo Speaker Digital Module 5W+5W
Amazon.com
15
$39.99
Circuit Cubes Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible With Most Building Blocks STEM Toy Learning
Amazon.com
72
Free shipping
$39.99
Circuit Cubes Bluetooth Upgrade+ Kit Electronic Toy Building Set Compatible With Most Building Blocks STEM Toy Learning
Amazon.com
72
$6.30
MDBT42Q-P192KV2 Nordic Nrf52810 Bluetooth Module BLE BT5.1 BT5.0 BT4.2 FCC IC CE Pre-Certified
Amazon.com
1
$6.30
MDBT42Q-P192KV2 Nordic Nrf52810 Bluetooth Module BLE BT5.1 BT5.0 BT4.2 FCC IC CE Pre-Certified
Amazon.com
1
$10.99
DSD TECH HM-10 Bluetooth 4.0 BLE Ibeacon UART Module With 4PIN Base Board For Arduino UNO R3 Mega 2560 Nano
Amazon.com
661
$10.99
DSD TECH HM-10 Bluetooth 4.0 BLE Ibeacon UART Module With 4PIN Base Board For Arduino UNO R3 Mega 2560 Nano
Amazon.com
661
$21.98
ZK-1002T Bluetooth Amplifier Board 2.0CH 100W2 Mini Audio AMP With Treble And Bass Control, BT And AUX Inputs, DC 9-24V Stereo AMP Module For Home
Amazon.com
56
$21.98
ZK-1002T Bluetooth Amplifier Board 2.0CH 100W2 Mini Audio AMP With Treble And Bass Control, BT And AUX Inputs, DC 9-24V Stereo AMP Module For Home
Amazon.com
56
$2.59
Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module With
Aliexpress
$2.59
Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module With
Aliexpress
$1.05
$1.45
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
27% off
$1.05
$1.45
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
$39.99
Renogy - BT-1 Bluetooth Module - Black
Best Buy
2K+
Free shipping
$39.99
Renogy - BT-1 Bluetooth Module - Black
Best Buy
2K+
$2.68
$7.92
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
66% off
$2.68
$7.92
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$0.95
$1.31
1PC Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
27% off
$0.95
$1.31
1PC Bluetooth Audio Circuit Board With Wires Bluetooth Module Amplifier Board DIY Bluetooth Module
Aliexpress
$2.14
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$2.14
1PCS Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board DIY Bluetooth
Aliexpress
$0.88
12V Stereo Bluetooth Audio Module Circuit Board Bluetooth Amplifier Board Bluetooth PCBA
Aliexpress
Free shipping
$0.88
12V Stereo Bluetooth Audio Module Circuit Board Bluetooth Amplifier Board Bluetooth PCBA
Aliexpress
Free shipping
$0.73
$1.62
DC 12V5V Stereo Bluetooth Audio Module Circuit Board Bluetooth No Power Amplifier Board Bluetooth
Aliexpress
Free shipping
54% off
$0.73
$1.62
DC 12V5V Stereo Bluetooth Audio Module Circuit Board Bluetooth No Power Amplifier Board Bluetooth
Aliexpress
Free shipping
$3.26
$6.67
EGBO Bluetooth Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board Stereo
Aliexpress
51% off
$3.26
$6.67
EGBO Bluetooth Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board Stereo
Aliexpress
$0.99
$1.44
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board Micro USB 5V DIY
Aliexpress
31% off
$0.99
$1.44
Multifunctional Bluetooth Audio Circuit Board Bluetooth Module Amplifier Board Micro USB 5V DIY
Aliexpress
$15.99
$18.97
DAMGOO 50W+50W Bluetooth 5.0 Amplifier Board,100W Audio Amp Board Dual Channel DC8-24V,Easy Installation And Password Free Connect To Phone Quietly
Amazon.com
949
15% off
$15.99
$18.97
DAMGOO 50W+50W Bluetooth 5.0 Amplifier Board,100W Audio Amp Board Dual Channel DC8-24V,Easy Installation And Password Free Connect To Phone Quietly
Amazon.com
949
$1.61
$1.74
Multifunctional Bluetooth Stereo Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board
Aliexpress
$1.61
$1.74
Multifunctional Bluetooth Stereo Audio Receiver Module Wireless Bluetooth 5.0 Circuit Receiver Board
Aliexpress