@Samuel235 I am looking at a CO sensor too, do you have any updates on the ones you are using? What is the exact model?

Thnx. Any specific hints how to do that with this hardware; I will try to get this working with a few pro-mini's as relay, I might have missed this on the educational pages here, but I'm wondering how to start the network / do the roll-out. "The first time a new sensor boots up" section tells me something about that it will find it's way home (which is great, must have cost some time to get this programmed I guess), but my challenge at the moment is to find out how to get this done effectively. Should I start with the gateway and see how far I can get with a single node and replace it at that position with a repaeter node, or can I simply place some repeaters and check with a serial monitor that they contact the gateway? Thanks, Boozz

@soward said: these were covered to some extent in another topic FYI: http://forum.mysensors.org/topic/479/the-new-esp8266-wifi-models