I'm completely confused now.
How can you be receiving data using Serial and also using Serial to send data to the Arduino Serial Monitor?
When you tried Software Serial, why did you use pins 7 and 1 knowing that 1 belongs to Hardware Serial?
What Uno are you using?
What data are you expecting / hoping to receive from the deOnano device? (In other words, how should I know that the output data you have posted is wrong)
...R