Jim Elbrecht wrote:
-snip-

So is there a *really* good detector that has a wide field of view,
and will detect objects coming straight at it up to about 100 feet
away? [minimum of 50']

Thanks all for some informative stuff. Darn thing started working
again. [maybe it *was* just dirty? I didn't intentionally clean it,
but I took it off and tightened wire nuts all around-- everything
seemed tight-- but I must of hit something.]

So now I've got some time to put it off in hopes that the low end crap
gets 'good enough' before I feel the need to replace again.

Jim