Yes they share some similarities with Digi's modules, and they're cheaper too. Telegesis offer plenty of support because these modules are in widespread use, one Swedish city has installed them in all electric meters for remote live billing applications, so I guessed they were reliable because of that !
Range depnds very much on the transmission path, the same as it does for any radio signal.
Being microwave devices (2.4GHz) they don't penetrate some materials as well as others but on the whole I think they compare favourably with the previous 433MHz modules I used (and they drew less power too)
My lab is in an upstairs room to the rear of the building. I put the main unit in there and walked down the street to the front of the house, about 35m before I started getting dropped packets. in the second test I put a third unit on the front lawn which immediately joined the network and acted as a relay station and then range went over 80m, line of sight.
These tests were all with the low power version. For the extra small cost the high power version would presumably give dramatically greater range, at the expense of power consumption.





Bookmarks