One of https://github.com/sui77/rc-switch/ demos with pins included for D1M RFTXRX BLOCK.

d1m_rftxrx_send_demo.ino

/*
  Example for different sending methods
  https://github.com/sui77/rc-switch/

  modified fo D1M RFTXRX BLOCK pins
*/

#include <RCSwitch.h>

RCSwitch mySwitch = RCSwitch();

void setup() {
  Serial.begin(9600);
  // Transmitter is connected to Arduino Pin #10  
  mySwitch.enableTransmit(D0); // D0 or D5 or D6 or D7 or D8
}

void loop() {
  /* See Example: TypeA_WithDIPSwitches */
  mySwitch.switchOn("11111", "00010");
  delay(1000);
  mySwitch.switchOff("11111", "00010");
  delay(1000);
  /* Same switch as above, but using decimal code */
  mySwitch.send(5393, 24);
  delay(1000);  
  mySwitch.send(5396, 24);
  delay(1000);  
  /* Same switch as above, but using binary code */
  mySwitch.send("000000000001010100010001");
  delay(1000);  
  mySwitch.send("000000000001010100010100");
  delay(1000);
  /* Same switch as above, but tri-state code */ 
  mySwitch.sendTriState("00000FFF0F0F");
  delay(1000);  
  mySwitch.sendTriState("00000FFF0FF0");
  delay(1000);
  delay(20000);
}