2 way switching

Discussion in 'C-Bus Wired Hardware' started by Rab_lone, Jun 23, 2020.

  1. Rab_lone


    Feb 25, 2020
    Likes Received:

    I'm sure this answer is simple and somewhere, just can't find it.
    How do I program as an example a Neo 2- switch to do the following.
    I want to be able to turn key 1 or 2 on together but I always have to have one key on.
    So if key one is off, key 2 is on. If key 2 is off then key one is on.

    Basically I always want one key to be always on and both can be on as well.

    I am using this to control A/C ducting for 2 zones and always want one on so the compressor doesn't freeze if If someone turns off the zone?

    Hope this makes sense.
    Rab_lone, Jun 23, 2020
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  2. Rab_lone


    Dec 1, 2005
    Likes Received:
    Adelaide, Australia
    You will need a logic capable device to do this.

    Alternatively you could just do it using physical change-over relays. And hardware interlocks are the safest option.

    You could also just power up the compressor if either zone is powered so turning off both zones would power down the compressor .
    Last edited: Jun 24, 2020
    Ashley, Jun 24, 2020
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