Type:AM-50S Bluetooth Virtual Serial Port Adapter. Colour:Random Color(Color is random, no specification is accepted). 1 Adapter.
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ESP32-A1S WiFi+ Bluetooth Module ESP32 Serial Port To WiFi Aduio-Kit Audio Development Board
Aliexpress UK
Type:AM-50D Bluetooth Virtual Serial Port Adapter. Colour:Random Color(Color is random, no specification is accepted). 1 Adapter.
eBay
ESP32-Audio-Kit Dual-Antenna WiFi+ Bluetooth Module with ESP32 Serial Port to WiFi Audio Module ESP32-A1S 4MB
Aliexpress UK
Type:AM-50D Bluetooth Virtual Serial Port Adapter. Colour:Random Color(Color is random, no specification is accepted). 1 Adapter.
eBay
WT32-ETH01 Embedded Serial Port Networking Bluetooth-compatible Ethernet WIFI Combo Gateway MCU ESP32 Wireless Module WT32 ETH01
Aliexpress UK
Using the currently widely used Bluetooth BLE technology, the Bluetooth master device realizes serial communication with the serial device connected to the BT580 by monitoring and writing the Bluetooth characteristic values inside the BT580.
eBay
WT32-ETH01 Embedded Serial Port Networking Ethernet Bluetooth-Compatible WIFI Combo Gateway MCU ESP32 Wireless Module Board
Aliexpress UK
Pro Mini Btbee Usb To Serial Port Xbee Adapter Module Arduonp Bluetooth Bee New. The Adapter also could support XBee interface. Usage 1: PC via a USB cable directly connected with XBee adapters. Bee Adapter is a compact USB to serial adapter equipped with BEE (20pin 2.0mm) sockets.
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WAVGAT FT232RL FTDI USB 3.3V 5.5V to TTL Serial Adapter Module for Arduino FT232 Mini Port.Buy a good quality Please choose me
Aliexpress UK
Type:AM-50U Bluetooth Virtual Serial Port Adapter. 1 Adapter.
eBay
1pcs FT232RL FT232 FTDI USB 3.3V 5.5V to TTL Serial Adapter Module for A-rduino Mini Port
Aliexpress UK
Using the currently widely used Bluetooth BLE technology, the Bluetooth master device realizes serial communication with the serial device connected to the BT580 by monitoring and writing the Bluetooth characteristic values inside the BT580.
eBay
Jasoz USB TO RS232 COM Port Serial Cable Adapter PDA 9 DB9 Pin Prolific PL2303 for Windows 7 8.1 10 Vista Mac OS USB RS232 COM
Aliexpress UK
Using the currently widely used Bluetooth BLE technology, the Bluetooth master device realizes serial communication with the serial device connected to the BT580 by monitoring and writing the Bluetooth characteristic values inside the BT580.
eBay
NEW HL-340 USB to RS232 COM Port Serial PDA 9 pin DB9 Cable Adapter Support Windows7 64
Aliexpress UK