SparkFun
SparkFun BlueSMiRF v2 Wireless Serial Link, up to 921600bps, ESP32-PICO-MINI-02 Module with Built-in PCB Antenna, Input Voltage: 3.3V to 5V, Board
The SparkFun BlueSMiRF v2 uses wireless to transform your serial connection into a wireless link. These boards work as a wireless serial UART pipe and are a great wireless replacement for serial cables. Simply pair, connect, and transmit serial data between your TX/RX lines! Any serial stream from 2...
$20.25