On Tue, 22 Jan 2013 08:23:54 -0800 (PST), Art Harris
wrote:

About two years ago, my daughter gave us a La Crosse Indoor / Outdoor
weather station (Model 8300) with an outdoor sensor/transmitter unit.
It worked perfectly until recently, and we've become addicted to it.

Two days ago, the outdoor readings disappeared. I replaced the
batteries in both the indoor and outdoor units, following the
procedure in the manual, but cannot get any outdoor readings.

Would welcome any helpfull hints or recomendations for a similar
weather product.

Thanks,
Art

That should do it. Maybe try the outside ones again.