I've got one of tho0se clocks and find the outdoor probe pretty useless. It has
a vedry short battery life and loses signal pretty often even from 30ft away.
Whenever it loses signal it takes an act of congress to reset the system. I
also don't like the fact that getting at the reset and control switch require
taking the outdoor probe apart.
Tom
Tom Brennan KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html