I also am lost in what is what. I have the Gen5 version of the Fibaro Multi Sensor.
After install I have 7 devices:

0000203 Lux
0201 Temperature
00000233 Alarm Type (light/switch)
00000232 Alarm Level (light/switch)
00000235 Burglar (light/switch)
00000200 General (light/switch) - in principle ...