Had this unit for about a month and was going to return, but with cost of postage back to non-Amazon seller, just wasn't worth the trouble and cost. To me, this unit doesnt seem to work well. I've been out with a steady wind and the unit seems to indicate little to no wind. I got to help calibrate my Davis weatherstation and it rarely seems to correlate. The buttons are hard to push and controls are a bit unintuitive. I would not recommend.