Baby Monitor - WiFi or Not??

Summer
I purchased a WiFi baby monitor by Motorola and now I am second guessing it. I live in a very secluded area and thought it would be safe as far as hackers go because I thought in order to hack into my WiFi you need to be close to my house. But I've just read other things that say people can hack from anywhere?  Does anyone have any knowledge of this?? Are WiFi monitors safe if I have a WiFi password?