Comments about Oregon Scientific Wireless Rain Gauge / Thermometer (RGR126):
I purchased this rain gauge a year ago and enjoy it. It is really accurate within a few hundredths of the local reports. It has even withstood golf ball size hail.
It is not difficult to assemble, but there are tiny screws to get to the batteries can that can be difficult. Can be somewhat difficult to program but I learned to just "re-set" all 3 units everytime I put new batteries in and that seems to work.