Hi, mfalkvidd! Thanks for your fast replay. I'm new in Home automation. Actually I try to build my sample system, based on serial gateway. I have my gateway connected to Openhab as controller, and now started to works finally with a temperature sensor.
I spent a lot of time trying to connect sensor to gateway, with no success. Just that piece of information needed to overcome.
Thanks for all!

Hi, to all!

My situation was exatly the same, that "pelnarps" had! My sensor couldn't get ID from gw, and gave the same results at both ends (gw, and sensor side). Changing gw.begin() as "ericdvb" suggested, solved this issue.
Thanks ericdvb, and pelnarps! I convinced, that this issue can be solved decreasing baudrate, isn't it!