Trouble Shooting_APC220/TEL0005/Wireless

This is hardwares needed:

Use the default setting on the wikifor two APC220 boards.

Code for Arduino:
 

Result:

1 You can see the two LED on pin13 are flashing every 2 seconds.

2 Open the Arduino IDE serial monitor of "Receiver", you could find the picture below.

Another post related to APC220.