You can communicate in one direction if you use HT12E & HT12D as the RF modules used are RF Transmitter and RF receiver so for two way communication you will require an HT12E & HT12D on both sides one side transmitting on 433Mhz and the other side transmitting on 315Mhz.
Or you can use RF Transreceiver module: http://www.dnatechindia.com/WIRELESS/CC2500-RF-Transreceiver-Module.html