Both Home and Away Mode indicate that the eufy ExpertSecure System E10 is armed and the devices are standing by. Only the Disarm mode means the devices are deactivated.
The sensor activations of Home and Away Mode are different. Here is a table showing sensors’ default settings. 

Default Settings

Whether to notify the Monitoring center

Customize default settings

NOTE: You can change the default settings for each sensor and camera in each mode through the eufy app. Or you can completely customize a mode to meet your specific security needs.