# 433 and 868MHz

**URL:** <https://community.homey.app/t/433-and-868mhz/45146>\
**Category:** Questions & Help\
**Created:** [March 23, 2021, 5:17pm UTC](https://community.homey.app/t/433-and-868mhz/45146 "2021-03-23T17:17:02Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![JPe4619](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jpe4619/32/9017_2.png) [@JPe4619](https://community.homey.app/u/JPe4619)\
**Post date:** [May 23, 2021, 12:12pm UTC](https://community.homey.app/t/433-and-868mhz/45146/9 "2021-05-23T12:12:41Z")

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Have a look at this:

> [@\[HOWTO\] BUVA Boxstream Mechanical ventilation hack](https://community.homey.app/t/howto-buva-boxstream-mechanical-ventilation-hack/7596):
>
> We own a BUVA Boxstream mechanical ventilation system in our home that i wanted to automate. There is a 0-10V sensor that could be used with a simple 0-10V zigbee, zwave or 433Mhz module but you can’t use the RF module at the same time when using a 0-10V module. my goal wat to have the system automated and at the same time keeping the wall remotes. We had a spare remote laying around that i opened up. [image] While looking for images i noticed some websites dare to ask €100+ for this thing. l…

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