ZigBee module (SZ-05-ADV) Pros & Cons with shield and without shield

Projects Networking, Protocols, and Devices
3

Hi im using zigbee sz05-adv when i connect the rxpin (rx0) in the arduino uno(transmitting side). it doesnt transmit any data

Here's my program

const int lp = 13;
int ib;
void setup ()
{
Serial.begin (9600);
pinMode (lp, OUTPUT);
}
void loop ()
{
if (Serial.available () > 0)
{
ib = Serial.read ();
if (ib == 'H')
{ digitalWrite (lp,LOW);
Serial.print ('H');
}
if (ib == 'L')
{ digitalWrite (lp, HIGH);
Serial.print ('L');
}
}
}