Tag: relay

  • XRF -Sensors + Relays

    Following on my post about automating my central heating I have decided on the main wireless technology to use – XRF. These are small 3.3v wireless serial transmitters that retail for <¬£10 each. I am planning to use these for two parts of the system 1) Temperature Sensors¬†~¬£15 each I will be using these for […]