Unit overview
![](../Images/jpg/84309259__Web.jpg)
1 | Housing with motor |
2 | Impeller |
3 | Cable grommet |
4 | Electronics cover |
5 | Internal grille or internal shutter |
5.1 | Fixed internal grille |
5.2 | Electrically operated internal shutter |
5.3 | Bimetal |
6 | Cover |
7 | Designer cover |
8 | Electronic circuit boards |
8.1 | Standard electronics |
8.2 | Sensor electronics (only for models F, H and B) |
8.3 | VZC electronics |
9 | Sensors |
9.1 | Motion sensor B |
9.2 | Light sensor F |
9.3 | Humidity sensor H |