On 11/21/2012 8:03 AM, Jim Thompson wrote:
On Tue, 20 Nov 2012 23:34:28 -0800, Jeff
wrote:

On Tue, 20 Nov 2012 13:31:26 -0700, Jim Thompson
wrote:

Along these lines, what would the group recommend for a weatherproof
switch to detect that a yard gate is not closed all the way?
...Jim Thompson

Perhaps it would be more productive to fix or improve the gate closing
mechanism, thus eliminating the need for a weather proof switch and
associated electronics? There is a wide variety of gate closing
mechanisms available, usually based on a linear or rotary spring
mechanism. Many can be retrofitted to an existing gate:
https://www.google.com/search?hl=en&q=gate+closers&tbm=isch

Then, there's the cannonball gate closer:
http://www.hooverfence.com/woodfence/CBP.htm

Actually I want to know that it was opened. Got a Mexican claiming he
worked when he didn't :-(

...Jim Thompson
You keep adding requirements to the spec.
Often, it's useful to monitor the thing you want monitored.
Monitoring attendance is no guarantee that you actually get work.
Stated another way:
If you can't tell if the work was done, you're paying for work
you don't need.