Nowadays, a Mechanical Controlled Ventilation (VMC in French) is a de-facto equipment in a bathroom.
Most of these Controlled Ventilation can run in two different speeds : low speed and high speed. VMC runs low speed any time and can be switched to high speed with a manual switch.
Thanks to home automation, it is now possible to automatically manage your Controlled Ventilation speed according to humidity level in the room.
This article explains how to automatically manage a Controlled Ventilation speed according to humidity level in a bathroom with the help of :
- a wireless humidity sensor
- a wireless switch
- a wireless gateway
- Domoticz, a very nice Open Source Home Automation Software
This setup has been tested on a Debian 8 Jessie server with a RfxTrx433 gateway, an Oregon Scientific THGR 122 Temperature/Humidity sensor and a DiO 54755 switch. All RF devices are working on 433 MHz frequency. But any other similar setup and devices should work as long as they are compatible with Domotiz.