802.15.4 or Zigbee will both work point to point, however are not interchangeable, so once you get a couple of one kind stick with that type. If you ever see yourself doing mesh, go with Zigbee:
The pro modules give you more range, but use more power and cost more. There are also other antenna options to help with range and for mounting on the outside of an enclosure. The wire antennas (link above) are good for the distance you state.
Yep ramsomhall, I know that, and it’s the reason why I decided to try something…
But I’m really a bit confusing with partnumbers of Digi products. I hope that XB24-Z7WIT-004 is correct.
Other supplier has XBP24-BWIT-004 …
The explanations and organization on the Digi site used to be worse! They’ve renamed stuff recently to be more “straightforward” if you can believe that : Just make sure your getting a Zigbee (formerly referred to as Series 2) with wire antenna. Rough retail price should be not more than $30. If it is higher, you might have the Pro version, or are dealing with a not so reputable reseller.