Thanks to @electrik and @mfalkvidd for your answers. I will try next time I have the opportunity. Currently the sensor is 400 km away from home.

@Sandolution , @bwn , @electrik Did anyone of you find a solution for this problem?

@jkandasa Any news here? (still have my rfm69 Boards here to check of the range is much better)

@Technovation Welcome to the MySensors forum! This is an awesome first post! Hope to see a lot more in the future!

Yes, you can have messages passing multiple repeaters. Yes, nodes can be included via repeaters. No, you should probably not make every node a repeater, enable it for woken nodes at strategic locations.

Hey guys, I was justing wondering, is there a way to deactivate the motion sensor if not being used? Eg: My motion sensors are connected to Homeseer and they show up as sensors but I was wondering if I could have an ON / OFF control to deactivate or active the motion as needed.

Ok, thanks. I'll try to use some extra repeaters then. Boozz

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

Be aware that sensor need to have 20 consecutive failed transmissions before starting to look for a new relaying node.