# Understanding rollershutter groups

**URL:** <https://community.openhab.org/t/understanding-rollershutter-groups/40055>\
**Category:** Beginners\
**Tags:** openhab2, rollershutter, grouping\
**Created:** [February 15, 2018, 4:22pm UTC](https://community.openhab.org/t/understanding-rollershutter-groups/40055 "2018-02-15T16:22:40Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Udo\_Hartmann](https://community.openhab.org/user_avatar/community.openhab.org/udo_hartmann/32/70871_2.png) [@Udo\_Hartmann](https://community.openhab.org/u/Udo_Hartmann)\
**Post date:** [February 15, 2018, 9:47pm UTC](https://community.openhab.org/t/understanding-rollershutter-groups/40055/2 "2018-02-15T21:47:05Z")

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You can’t build an OR with Rollershutter Items. A Rollershutter Item is of Type Number (!) when getting the state, and there are three different states to control them. You can try to use AVG to build the group state.

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_[View the full topic](https://community.openhab.org/t/understanding-rollershutter-groups/40055)._