# Radio Communicate data using radio packets ```cards radio.sendNumber(0); radio.sendValue("data", 0); radio.sendString(""); radio.onDataReceived(() => { }); radio.receiveNumber(); radio.receivedNumberAt(0); radio.receiveString(); radio.receivedSignalStrength(); radio.setGroup(0); radio.setTransmitPower(7); radio.writeValueToSerial(); radio.setTransmitSerialNumber(false); ```