hello everybody! i’m try to connect Zolertia Z1 with Xbee S1. but i dont understand encryption on Xbee S1. can you explain for me? thank you!
sorry about my English! 
The 802.15.4 encryption is actually really simple to use. You have an Encryption key that you must set (KY). This key must be the same value on all devices within the network. You then set the EE to 1 to enable it.
thank you! how about encryption on Zolertia Z1? can you know about it?
I am sorry but I do not know anything about that product. You may need to contact their support for help.