Getting WiFi signal and battery level is not supported at the moment but that's going to be the next feature I'll implement.
The module id is part of the "devicelist" which you can't easily access without manually getting an access token. The binding once had an autoconfiguration mode that automatically created an items file but I removed that option (see the issue for details:
https://github.com/openhab/openhab/pull/30). Maybe I should add that in again as a command line tool.
Could you please try to calculate the module id from the serial number displayed in the settings dialog of the Netatmo app and report back if it works?
First serial character is "h": start with "02",
first serial character is "i": start with "03",
append ":00:00:",
split the rest into three parts of two characters and append with a colon as delimeter.
For example your serial number "h00bcdc" should end up as "02:00:00:00:bc:dc".
Good luck!