# Access Control Slave Unit

**URL:** <https://community.anviz.com/t/access-control-slave-unit/608>\
**Category:** Access Control\
**Created:** [September 19, 2022, 5:09am UTC](https://community.anviz.com/t/access-control-slave-unit/608 "2022-09-19T05:09:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![valuecreationit](https://avatars.discourse-cdn.com/v4/letter/v/e19b73/32.png) [@valuecreationit](https://community.anviz.com/u/valuecreationit)\
**Post date:** [September 19, 2022, 5:10am UTC](https://community.anviz.com/t/access-control-slave-unit/608/1 "2022-09-19T05:10:00Z")

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I am using C2 PRO in the door entrance and would like to add a slave device for the exit . What are the available models available for this??

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**Author:** ![Leonardo\_Anviz](https://sea2.discourse-cdn.com/flex020/user_avatar/community.anviz.com/leonardo_anviz/32/60_2.png) [@Leonardo\_Anviz](https://community.anviz.com/u/Leonardo_Anviz)\
**Post date:** [September 19, 2022, 1:37pm UTC](https://community.anviz.com/t/access-control-slave-unit/608/2 "2022-09-19T13:37:10Z")

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Hi @valuecreationit , please check if your C2 PRO has RS485 communication (some previous versions didn´t have it, so it´s important to double check first).

If so, you can consider [**C2 SR**](https://www.anviz.com/product/c2sr-outdoor-reader.html) and **[T5S](https://www.anviz.com/product/t5s-access-control.html)**

Please contact your local provider, or feel free to ask for more information if you don’t have one 😃