The Go to product viewer dialog for this item. is a highly versatile 2.4GHz wireless serial port module that serves as an affordable alternative to the NRF24L01. It is designed for "transparent transmission," essentially acting as a wireless USB cable between microcontrollers like the Arduino. 1. Key Specifications & Performance Range: Up to 120 meters (line-of-sight).

SoftwareSerial bluetooth(2, 3); // RX, TX

SoftwareSerial jdy(2, 3); // RX on pin 2, TX on pin 3

void setup() 
  Serial.begin(9600);
The JDY-40 is a low-power, 2.4GHz wireless transceiver that functions as a "wireless serial port" for microcontrollers like Arduino
// RX on Pin 2 (connect to JDY-40 TX), TX on Pin 3 (connect to JDY-40 RX) SoftwareSerial jdySerial( setup() 
  Serial.begin( );
  jdySerial.begin( );