Re: Ultrasonic Sensors

["Bob Worthy" <securinc@xxxxxxxxxxxxx>]

"Robert L Bass" > wrote in message

> >> Since they will be used outdoors, what will the issues be?

> The hardest part of installing outdoor photoelectric motion detectors is
> running the wire.  Most of the time it's run below ground.  A tool called
a
> "ditch witch" can cut an 18" deep by 2" wide trench for wire burial (be
sure
> to use cable that is rated for direct burial and check with your building
> inspector for recommended depth of the trench to avoid damage due to
ground
> frost in winter).

Not to mention underground telephone, cable lines, electric, sprinkler
systems, electric and anything else that might be in the way, when an
unexperienced person grabs ahold of a ditch witch. Can be a dangerous tool
for the novice. Be Careful If You Choose To Use This Type Of Machinery. Call
For Locates. There are companies that will do the locates for you. Then if
you hit something they will be responsible.